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Finding the Fourth Proportional to 136,576.80, 204,865.20 and 89,337.60

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Solution

The fourth proportional to 136,576.80, 204,865.20 and 89,337.60 is: 134,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,576.80 : 204,865.20 = 89,337.60 : x
  2. Step 2: Convert to fraction form
    136,576.80/204,865.20 = 89,337.60/x
  3. Step 3: Cross multiply
    136,576.80x = 204,865.20 × 89,337.60
  4. Step 4: Simplify right side
    136,576.80x = 18,302,165,291.52
  5. Step 5: Solve for x
    x = 18,302,165,291.52/136,576.80
  6. Step 6: Final answer
    x = 134,006.40

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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.