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Finding the Fourth Proportional to 125,192.88, 172,723.32 and 71,439.12

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Solution

The fourth proportional to 125,192.88, 172,723.32 and 71,439.12 is: 98,561.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,192.88 : 172,723.32 = 71,439.12 : x
  2. Step 2: Convert to fraction form
    125,192.88/172,723.32 = 71,439.12/x
  3. Step 3: Cross multiply
    125,192.88x = 172,723.32 × 71,439.12
  4. Step 4: Simplify right side
    125,192.88x = 12,339,201,984.28
  5. Step 5: Solve for x
    x = 12,339,201,984.28/125,192.88
  6. Step 6: Final answer
    x = 98,561.53

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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.