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Finding the Fourth Proportional to 156,930.88, 216,566.02 and 85,311.04

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Solution

The fourth proportional to 156,930.88, 216,566.02 and 85,311.04 is: 117,730.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.88 : 216,566.02 = 85,311.04 : x
  2. Step 2: Convert to fraction form
    156,930.88/216,566.02 = 85,311.04/x
  3. Step 3: Cross multiply
    156,930.88x = 216,566.02 × 85,311.04
  4. Step 4: Simplify right side
    156,930.88x = 18,475,472,394.86
  5. Step 5: Solve for x
    x = 18,475,472,394.86/156,930.88
  6. Step 6: Final answer
    x = 117,730.00

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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.