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Finding the Fourth Proportional to 125,541.20, 188,311.80 and 72,397.10

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Solution

The fourth proportional to 125,541.20, 188,311.80 and 72,397.10 is: 108,595.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,541.20 : 188,311.80 = 72,397.10 : x
  2. Step 2: Convert to fraction form
    125,541.20/188,311.80 = 72,397.10/x
  3. Step 3: Cross multiply
    125,541.20x = 188,311.80 × 72,397.10
  4. Step 4: Simplify right side
    125,541.20x = 13,633,228,215.78
  5. Step 5: Solve for x
    x = 13,633,228,215.78/125,541.20
  6. Step 6: Final answer
    x = 108,595.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.