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Finding the Fourth Proportional to 129,635.40, 187,446.45 and 129,635.40

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Solution

The fourth proportional to 129,635.40, 187,446.45 and 129,635.40 is: 187,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,635.40 : 187,446.45 = 129,635.40 : x
  2. Step 2: Convert to fraction form
    129,635.40/187,446.45 = 129,635.40/x
  3. Step 3: Cross multiply
    129,635.40x = 187,446.45 × 129,635.40
  4. Step 4: Simplify right side
    129,635.40x = 24,299,695,524.33
  5. Step 5: Solve for x
    x = 24,299,695,524.33/129,635.40
  6. Step 6: Final answer
    x = 187,446.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.