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Finding the Fourth Proportional to 125,237.16, 172,839.24 and 71,530.20

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Solution

The fourth proportional to 125,237.16, 172,839.24 and 71,530.20 is: 98,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,237.16 : 172,839.24 = 71,530.20 : x
  2. Step 2: Convert to fraction form
    125,237.16/172,839.24 = 71,530.20/x
  3. Step 3: Cross multiply
    125,237.16x = 172,839.24 × 71,530.20
  4. Step 4: Simplify right side
    125,237.16x = 12,363,225,405.05
  5. Step 5: Solve for x
    x = 12,363,225,405.05/125,237.16
  6. Step 6: Final answer
    x = 98,718.51

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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.