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Finding the Fourth Proportional to 138,001.80, 207,002.70 and 114,673.80

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Solution

The fourth proportional to 138,001.80, 207,002.70 and 114,673.80 is: 172,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,001.80 : 207,002.70 = 114,673.80 : x
  2. Step 2: Convert to fraction form
    138,001.80/207,002.70 = 114,673.80/x
  3. Step 3: Cross multiply
    138,001.80x = 207,002.70 × 114,673.80
  4. Step 4: Simplify right side
    138,001.80x = 23,737,786,219.26
  5. Step 5: Solve for x
    x = 23,737,786,219.26/138,001.80
  6. Step 6: Final answer
    x = 172,010.70

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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.