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Finding the Fourth Proportional to 108,685.20, 163,027.80 and 98,843.70

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Solution

The fourth proportional to 108,685.20, 163,027.80 and 98,843.70 is: 148,265.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,685.20 : 163,027.80 = 98,843.70 : x
  2. Step 2: Convert to fraction form
    108,685.20/163,027.80 = 98,843.70/x
  3. Step 3: Cross multiply
    108,685.20x = 163,027.80 × 98,843.70
  4. Step 4: Simplify right side
    108,685.20x = 16,114,270,954.86
  5. Step 5: Solve for x
    x = 16,114,270,954.86/108,685.20
  6. Step 6: Final answer
    x = 148,265.55

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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.