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Finding the Fourth Proportional to 147,031.60, 220,612.20 and 68,105.20

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Solution

The fourth proportional to 147,031.60, 220,612.20 and 68,105.20 is: 102,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,031.60 : 220,612.20 = 68,105.20 : x
  2. Step 2: Convert to fraction form
    147,031.60/220,612.20 = 68,105.20/x
  3. Step 3: Cross multiply
    147,031.60x = 220,612.20 × 68,105.20
  4. Step 4: Simplify right side
    147,031.60x = 15,024,838,003.44
  5. Step 5: Solve for x
    x = 15,024,838,003.44/147,031.60
  6. Step 6: Final answer
    x = 102,187.82

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1.5x scale

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.