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Finding the Fourth Proportional to 108,061.60, 162,130.80 and 104,221.60

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Solution

The fourth proportional to 108,061.60, 162,130.80 and 104,221.60 is: 156,369.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,061.60 : 162,130.80 = 104,221.60 : x
  2. Step 2: Convert to fraction form
    108,061.60/162,130.80 = 104,221.60/x
  3. Step 3: Cross multiply
    108,061.60x = 162,130.80 × 104,221.60
  4. Step 4: Simplify right side
    108,061.60x = 16,897,531,385.28
  5. Step 5: Solve for x
    x = 16,897,531,385.28/108,061.60
  6. Step 6: Final answer
    x = 156,369.44

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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.