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Finding the Fourth Proportional to 156,630.94, 216,150.91 and 85,010.97

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Solution

The fourth proportional to 156,630.94, 216,150.91 and 85,010.97 is: 117,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.94 : 216,150.91 = 85,010.97 : x
  2. Step 2: Convert to fraction form
    156,630.94/216,150.91 = 85,010.97/x
  3. Step 3: Cross multiply
    156,630.94x = 216,150.91 × 85,010.97
  4. Step 4: Simplify right side
    156,630.94x = 18,375,199,123.52
  5. Step 5: Solve for x
    x = 18,375,199,123.52/156,630.94
  6. Step 6: Final answer
    x = 117,315.26

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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.