Home / 129,678.89-194,518.35-34,909.29

Finding the Fourth Proportional to 129,678.89, 194,518.35 and 34,909.29

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Solution

The fourth proportional to 129,678.89, 194,518.35 and 34,909.29 is: 52,363.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,678.89 : 194,518.35 = 34,909.29 : x
  2. Step 2: Convert to fraction form
    129,678.89/194,518.35 = 34,909.29/x
  3. Step 3: Cross multiply
    129,678.89x = 194,518.35 × 34,909.29
  4. Step 4: Simplify right side
    129,678.89x = 6,790,497,490.47
  5. Step 5: Solve for x
    x = 6,790,497,490.47/129,678.89
  6. Step 6: Final answer
    x = 52,363.94

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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.