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Finding the Fourth Proportional to 125,412.96, 188,118.92 and 45,432.20

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Solution

The fourth proportional to 125,412.96, 188,118.92 and 45,432.20 is: 68,148.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,412.96 : 188,118.92 = 45,432.20 : x
  2. Step 2: Convert to fraction form
    125,412.96/188,118.92 = 45,432.20/x
  3. Step 3: Cross multiply
    125,412.96x = 188,118.92 × 45,432.20
  4. Step 4: Simplify right side
    125,412.96x = 8,546,656,397.22
  5. Step 5: Solve for x
    x = 8,546,656,397.22/125,412.96
  6. Step 6: Final answer
    x = 68,148.11

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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.