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Finding the Fourth Proportional to 108,920.20, 163,380.30 and 98,897.80

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Solution

The fourth proportional to 108,920.20, 163,380.30 and 98,897.80 is: 148,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,920.20 : 163,380.30 = 98,897.80 : x
  2. Step 2: Convert to fraction form
    108,920.20/163,380.30 = 98,897.80/x
  3. Step 3: Cross multiply
    108,920.20x = 163,380.30 × 98,897.80
  4. Step 4: Simplify right side
    108,920.20x = 16,157,952,233.34
  5. Step 5: Solve for x
    x = 16,157,952,233.34/108,920.20
  6. Step 6: Final answer
    x = 148,346.70

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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.