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Finding the Fourth Proportional to 125,309.25, 172,933.65 and 74,352.15

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Solution

The fourth proportional to 125,309.25, 172,933.65 and 74,352.15 is: 102,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,309.25 : 172,933.65 = 74,352.15 : x
  2. Step 2: Convert to fraction form
    125,309.25/172,933.65 = 74,352.15/x
  3. Step 3: Cross multiply
    125,309.25x = 172,933.65 × 74,352.15
  4. Step 4: Simplify right side
    125,309.25x = 12,857,988,684.85
  5. Step 5: Solve for x
    x = 12,857,988,684.85/125,309.25
  6. Step 6: Final answer
    x = 102,610.05

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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.