Home / 156,780.88-216,447.39-103,221.61

Finding the Fourth Proportional to 156,780.88, 216,447.39 and 103,221.61

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Solution

The fourth proportional to 156,780.88, 216,447.39 and 103,221.61 is: 142,504.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,780.88 : 216,447.39 = 103,221.61 : x
  2. Step 2: Convert to fraction form
    156,780.88/216,447.39 = 103,221.61/x
  3. Step 3: Cross multiply
    156,780.88x = 216,447.39 × 103,221.61
  4. Step 4: Simplify right side
    156,780.88x = 22,342,047,534.98
  5. Step 5: Solve for x
    x = 22,342,047,534.98/156,780.88
  6. Step 6: Final answer
    x = 142,504.93

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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.