Home / 138,627.18-207,915.72-38,762.70

Finding the Fourth Proportional to 138,627.18, 207,915.72 and 38,762.70

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Solution

The fourth proportional to 138,627.18, 207,915.72 and 38,762.70 is: 58,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,627.18 : 207,915.72 = 38,762.70 : x
  2. Step 2: Convert to fraction form
    138,627.18/207,915.72 = 38,762.70/x
  3. Step 3: Cross multiply
    138,627.18x = 207,915.72 × 38,762.70
  4. Step 4: Simplify right side
    138,627.18x = 8,059,374,679.64
  5. Step 5: Solve for x
    x = 8,059,374,679.64/138,627.18
  6. Step 6: Final answer
    x = 58,137.05

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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.