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Finding the Fourth Proportional to 156,866.76, 216,366.66 and 103,134.60

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Solution

The fourth proportional to 156,866.76, 216,366.66 and 103,134.60 is: 142,253.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,866.76 : 216,366.66 = 103,134.60 : x
  2. Step 2: Convert to fraction form
    156,866.76/216,366.66 = 103,134.60/x
  3. Step 3: Cross multiply
    156,866.76x = 216,366.66 × 103,134.60
  4. Step 4: Simplify right side
    156,866.76x = 22,314,888,932.44
  5. Step 5: Solve for x
    x = 22,314,888,932.44/156,866.76
  6. Step 6: Final answer
    x = 142,253.78

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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.