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Finding the Fourth Proportional to 138,243.54, 207,398.28 and 44,749.32

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Solution

The fourth proportional to 138,243.54, 207,398.28 and 44,749.32 is: 67,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,243.54 : 207,398.28 = 44,749.32 : x
  2. Step 2: Convert to fraction form
    138,243.54/207,398.28 = 44,749.32/x
  3. Step 3: Cross multiply
    138,243.54x = 207,398.28 × 44,749.32
  4. Step 4: Simplify right side
    138,243.54x = 9,280,931,999.17
  5. Step 5: Solve for x
    x = 9,280,931,999.17/138,243.54
  6. Step 6: Final answer
    x = 67,134.65

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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.