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Finding the Fourth Proportional to 108,680.10, 163,020.15 and 99,348.90

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Solution

The fourth proportional to 108,680.10, 163,020.15 and 99,348.90 is: 149,023.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,680.10 : 163,020.15 = 99,348.90 : x
  2. Step 2: Convert to fraction form
    108,680.10/163,020.15 = 99,348.90/x
  3. Step 3: Cross multiply
    108,680.10x = 163,020.15 × 99,348.90
  4. Step 4: Simplify right side
    108,680.10x = 16,195,872,580.34
  5. Step 5: Solve for x
    x = 16,195,872,580.34/108,680.10
  6. Step 6: Final answer
    x = 149,023.35

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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.