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Finding the Fourth Proportional to 108,380.80, 162,340.80 and 89,948.80

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Solution

The fourth proportional to 108,380.80, 162,340.80 and 89,948.80 is: 134,731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,380.80 : 162,340.80 = 89,948.80 : x
  2. Step 2: Convert to fraction form
    108,380.80/162,340.80 = 89,948.80/x
  3. Step 3: Cross multiply
    108,380.80x = 162,340.80 × 89,948.80
  4. Step 4: Simplify right side
    108,380.80x = 14,602,360,151.04
  5. Step 5: Solve for x
    x = 14,602,360,151.04/108,380.80
  6. Step 6: Final answer
    x = 134,731.98

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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.