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Finding the Fourth Proportional to 118,215.70, 177,179.55 and 51,514.90

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Solution

The fourth proportional to 118,215.70, 177,179.55 and 51,514.90 is: 77,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,215.70 : 177,179.55 = 51,514.90 : x
  2. Step 2: Convert to fraction form
    118,215.70/177,179.55 = 51,514.90/x
  3. Step 3: Cross multiply
    118,215.70x = 177,179.55 × 51,514.90
  4. Step 4: Simplify right side
    118,215.70x = 9,127,386,800.30
  5. Step 5: Solve for x
    x = 9,127,386,800.30/118,215.70
  6. Step 6: Final answer
    x = 77,209.60

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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.