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Finding the Fourth Proportional to 156,630.73, 216,150.60 and 85,010.74

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Solution

The fourth proportional to 156,630.73, 216,150.60 and 85,010.74 is: 117,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.73 : 216,150.60 = 85,010.74 : x
  2. Step 2: Convert to fraction form
    156,630.73/216,150.60 = 85,010.74/x
  3. Step 3: Cross multiply
    156,630.73x = 216,150.60 × 85,010.74
  4. Step 4: Simplify right side
    156,630.73x = 18,375,122,457.44
  5. Step 5: Solve for x
    x = 18,375,122,457.44/156,630.73
  6. Step 6: Final answer
    x = 117,314.93

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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.