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Finding the Fourth Proportional to 138,267.65, 207,404.21 and 43,495.83

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Solution

The fourth proportional to 138,267.65, 207,404.21 and 43,495.83 is: 65,244.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,267.65 : 207,404.21 = 43,495.83 : x
  2. Step 2: Convert to fraction form
    138,267.65/207,404.21 = 43,495.83/x
  3. Step 3: Cross multiply
    138,267.65x = 207,404.21 × 43,495.83
  4. Step 4: Simplify right side
    138,267.65x = 9,021,218,368.18
  5. Step 5: Solve for x
    x = 9,021,218,368.18/138,267.65
  6. Step 6: Final answer
    x = 65,244.60

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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.