Home / 143,400,479,969.52-197,910,015,332.33-81,616,071,619.13

Finding the Fourth Proportional to 143,400,479,969.52, 197,910,015,332.33 and 81,616,071,619.13

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Solution

The fourth proportional to 143,400,479,969.52, 197,910,015,332.33 and 81,616,071,619.13 is: 112,640,055,242.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,400,479,969.52 : 197,910,015,332.33 = 81,616,071,619.13 : x
  2. Step 2: Convert to fraction form
    143,400,479,969.52/197,910,015,332.33 = 81,616,071,619.13/x
  3. Step 3: Cross multiply
    143,400,479,969.52x = 197,910,015,332.33 × 81,616,071,619.13
  4. Step 4: Simplify right side
    143,400,479,969.52x = 16,152,637,985,506,166,046,720
  5. Step 5: Solve for x
    x = 16,152,637,985,506,166,046,720/143,400,479,969.52
  6. Step 6: Final answer
    x = 112,640,055,242.07

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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.