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Finding the Fourth Proportional to 125,319.69, 172,925.16 and 71,608.17

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Solution

The fourth proportional to 125,319.69, 172,925.16 and 71,608.17 is: 98,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,319.69 : 172,925.16 = 71,608.17 : x
  2. Step 2: Convert to fraction form
    125,319.69/172,925.16 = 71,608.17/x
  3. Step 3: Cross multiply
    125,319.69x = 172,925.16 × 71,608.17
  4. Step 4: Simplify right side
    125,319.69x = 12,382,854,254.56
  5. Step 5: Solve for x
    x = 12,382,854,254.56/125,319.69
  6. Step 6: Final answer
    x = 98,810.13

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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.