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Finding the Fourth Proportional to 100,854.60, 151,314.30 and 67,612.20

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Solution

The fourth proportional to 100,854.60, 151,314.30 and 67,612.20 is: 101,440.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,854.60 : 151,314.30 = 67,612.20 : x
  2. Step 2: Convert to fraction form
    100,854.60/151,314.30 = 67,612.20/x
  3. Step 3: Cross multiply
    100,854.60x = 151,314.30 × 67,612.20
  4. Step 4: Simplify right side
    100,854.60x = 10,230,692,714.46
  5. Step 5: Solve for x
    x = 10,230,692,714.46/100,854.60
  6. Step 6: Final answer
    x = 101,440.02

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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.