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Finding the Fourth Proportional to 156,665.52, 216,198.66 and 85,045.56

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Solution

The fourth proportional to 156,665.52, 216,198.66 and 85,045.56 is: 117,363.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,665.52 : 216,198.66 = 85,045.56 : x
  2. Step 2: Convert to fraction form
    156,665.52/216,198.66 = 85,045.56/x
  3. Step 3: Cross multiply
    156,665.52x = 216,198.66 × 85,045.56
  4. Step 4: Simplify right side
    156,665.52x = 18,386,736,110.95
  5. Step 5: Solve for x
    x = 18,386,736,110.95/156,665.52
  6. Step 6: Final answer
    x = 117,363.00

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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.