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Finding the Fourth Proportional to 125,140.01, 172,695.96 and 71,423.91

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Solution

The fourth proportional to 125,140.01, 172,695.96 and 71,423.91 is: 98,566.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,140.01 : 172,695.96 = 71,423.91 : x
  2. Step 2: Convert to fraction form
    125,140.01/172,695.96 = 71,423.91/x
  3. Step 3: Cross multiply
    125,140.01x = 172,695.96 × 71,423.91
  4. Step 4: Simplify right side
    125,140.01x = 12,334,620,704.40
  5. Step 5: Solve for x
    x = 12,334,620,704.40/125,140.01
  6. Step 6: Final answer
    x = 98,566.57

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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.