Home / 143,400,479,990.94-197,910,015,361.86-81,616,071,640.50

Finding the Fourth Proportional to 143,400,479,990.94, 197,910,015,361.86 and 81,616,071,640.50

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Solution

The fourth proportional to 143,400,479,990.94, 197,910,015,361.86 and 81,616,071,640.50 is: 112,640,055,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,400,479,990.94 : 197,910,015,361.86 = 81,616,071,640.50 : x
  2. Step 2: Convert to fraction form
    143,400,479,990.94/197,910,015,361.86 = 81,616,071,640.50/x
  3. Step 3: Cross multiply
    143,400,479,990.94x = 197,910,015,361.86 × 81,616,071,640.50
  4. Step 4: Simplify right side
    143,400,479,990.94x = 16,152,637,992,146,019,811,328
  5. Step 5: Solve for x
    x = 16,152,637,992,146,019,811,328/143,400,479,990.94
  6. Step 6: Final answer
    x = 112,640,055,271.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.