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Finding the Fourth Proportional to 125,081.52, 172,609.16 and 71,365.56

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Solution

The fourth proportional to 125,081.52, 172,609.16 and 71,365.56 is: 98,482.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,081.52 : 172,609.16 = 71,365.56 : x
  2. Step 2: Convert to fraction form
    125,081.52/172,609.16 = 71,365.56/x
  3. Step 3: Cross multiply
    125,081.52x = 172,609.16 × 71,365.56
  4. Step 4: Simplify right side
    125,081.52x = 12,318,349,007.70
  5. Step 5: Solve for x
    x = 12,318,349,007.70/125,081.52
  6. Step 6: Final answer
    x = 98,482.57

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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.