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Finding the Fourth Proportional to 125,153.16, 172,723.76 and 71,446.26

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Solution

The fourth proportional to 125,153.16, 172,723.76 and 71,446.26 is: 98,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,153.16 : 172,723.76 = 71,446.26 : x
  2. Step 2: Convert to fraction form
    125,153.16/172,723.76 = 71,446.26/x
  3. Step 3: Cross multiply
    125,153.16x = 172,723.76 × 71,446.26
  4. Step 4: Simplify right side
    125,153.16x = 12,340,466,665.14
  5. Step 5: Solve for x
    x = 12,340,466,665.14/125,153.16
  6. Step 6: Final answer
    x = 98,602.92

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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.