Home / 129,251.35-178,363.73-71,890.48

Finding the Fourth Proportional to 129,251.35, 178,363.73 and 71,890.48

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Solution

The fourth proportional to 129,251.35, 178,363.73 and 71,890.48 is: 99,207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,251.35 : 178,363.73 = 71,890.48 : x
  2. Step 2: Convert to fraction form
    129,251.35/178,363.73 = 71,890.48/x
  3. Step 3: Cross multiply
    129,251.35x = 178,363.73 × 71,890.48
  4. Step 4: Simplify right side
    129,251.35x = 12,822,652,913.02
  5. Step 5: Solve for x
    x = 12,822,652,913.02/129,251.35
  6. Step 6: Final answer
    x = 99,207.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.