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Finding the Fourth Proportional to 137,727.20, 206,590.80 and 118,044.20

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Solution

The fourth proportional to 137,727.20, 206,590.80 and 118,044.20 is: 177,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,727.20 : 206,590.80 = 118,044.20 : x
  2. Step 2: Convert to fraction form
    137,727.20/206,590.80 = 118,044.20/x
  3. Step 3: Cross multiply
    137,727.20x = 206,590.80 × 118,044.20
  4. Step 4: Simplify right side
    137,727.20x = 24,386,845,713.36
  5. Step 5: Solve for x
    x = 24,386,845,713.36/137,727.20
  6. Step 6: Final answer
    x = 177,066.30

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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.