Home / 143,135.16-197,528.22-78,607.32

Finding the Fourth Proportional to 143,135.16, 197,528.22 and 78,607.32

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Solution

The fourth proportional to 143,135.16, 197,528.22 and 78,607.32 is: 108,479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,135.16 : 197,528.22 = 78,607.32 : x
  2. Step 2: Convert to fraction form
    143,135.16/197,528.22 = 78,607.32/x
  3. Step 3: Cross multiply
    143,135.16x = 197,528.22 × 78,607.32
  4. Step 4: Simplify right side
    143,135.16x = 15,527,163,998.57
  5. Step 5: Solve for x
    x = 15,527,163,998.57/143,135.16
  6. Step 6: Final answer
    x = 108,479.03

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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.