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Finding the Fourth Proportional to 129,656.40, 194,776.20 and 124,699.20

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Solution

The fourth proportional to 129,656.40, 194,776.20 and 124,699.20 is: 187,329.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,656.40 : 194,776.20 = 124,699.20 : x
  2. Step 2: Convert to fraction form
    129,656.40/194,776.20 = 124,699.20/x
  3. Step 3: Cross multiply
    129,656.40x = 194,776.20 × 124,699.20
  4. Step 4: Simplify right side
    129,656.40x = 24,288,436,319.04
  5. Step 5: Solve for x
    x = 24,288,436,319.04/129,656.40
  6. Step 6: Final answer
    x = 187,329.25

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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.