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Finding the Fourth Proportional to 138,479.93, 207,636.86 and 63,506.17

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Solution

The fourth proportional to 138,479.93, 207,636.86 and 63,506.17 is: 95,221.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,479.93 : 207,636.86 = 63,506.17 : x
  2. Step 2: Convert to fraction form
    138,479.93/207,636.86 = 63,506.17/x
  3. Step 3: Cross multiply
    138,479.93x = 207,636.86 × 63,506.17
  4. Step 4: Simplify right side
    138,479.93x = 13,186,221,369.10
  5. Step 5: Solve for x
    x = 13,186,221,369.10/138,479.93
  6. Step 6: Final answer
    x = 95,221.18

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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.