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Finding the Fourth Proportional to 156,874.35, 216,488.29 and 85,254.39

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Solution

The fourth proportional to 156,874.35, 216,488.29 and 85,254.39 is: 117,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,874.35 : 216,488.29 = 85,254.39 : x
  2. Step 2: Convert to fraction form
    156,874.35/216,488.29 = 85,254.39/x
  3. Step 3: Cross multiply
    156,874.35x = 216,488.29 × 85,254.39
  4. Step 4: Simplify right side
    156,874.35x = 18,456,576,023.65
  5. Step 5: Solve for x
    x = 18,456,576,023.65/156,874.35
  6. Step 6: Final answer
    x = 117,651.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.