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Finding the Fourth Proportional to 93,630.20, 140,153.70 and 90,714.20

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Solution

The fourth proportional to 93,630.20, 140,153.70 and 90,714.20 is: 135,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,630.20 : 140,153.70 = 90,714.20 : x
  2. Step 2: Convert to fraction form
    93,630.20/140,153.70 = 90,714.20/x
  3. Step 3: Cross multiply
    93,630.20x = 140,153.70 × 90,714.20
  4. Step 4: Simplify right side
    93,630.20x = 12,713,930,772.54
  5. Step 5: Solve for x
    x = 12,713,930,772.54/93,630.20
  6. Step 6: Final answer
    x = 135,788.78

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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.