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Finding the Fourth Proportional to 138,612.95, 207,888.04 and 63,661.04

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Solution

The fourth proportional to 138,612.95, 207,888.04 and 63,661.04 is: 95,477.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,612.95 : 207,888.04 = 63,661.04 : x
  2. Step 2: Convert to fraction form
    138,612.95/207,888.04 = 63,661.04/x
  3. Step 3: Cross multiply
    138,612.95x = 207,888.04 × 63,661.04
  4. Step 4: Simplify right side
    138,612.95x = 13,234,368,829.96
  5. Step 5: Solve for x
    x = 13,234,368,829.96/138,612.95
  6. Step 6: Final answer
    x = 95,477.15

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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.