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Finding the Fourth Proportional to 129,742.80, 194,700.75 and 45,502.89

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Solution

The fourth proportional to 129,742.80, 194,700.75 and 45,502.89 is: 68,284.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,742.80 : 194,700.75 = 45,502.89 : x
  2. Step 2: Convert to fraction form
    129,742.80/194,700.75 = 45,502.89/x
  3. Step 3: Cross multiply
    129,742.80x = 194,700.75 × 45,502.89
  4. Step 4: Simplify right side
    129,742.80x = 8,859,446,810.17
  5. Step 5: Solve for x
    x = 8,859,446,810.17/129,742.80
  6. Step 6: Final answer
    x = 68,284.69

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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.