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Finding the Fourth Proportional to 159,439.88, 220,037.02 and 87,819.89

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Solution

The fourth proportional to 159,439.88, 220,037.02 and 87,819.89 is: 121,196.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,439.88 : 220,037.02 = 87,819.89 : x
  2. Step 2: Convert to fraction form
    159,439.88/220,037.02 = 87,819.89/x
  3. Step 3: Cross multiply
    159,439.88x = 220,037.02 × 87,819.89
  4. Step 4: Simplify right side
    159,439.88x = 19,323,625,572.59
  5. Step 5: Solve for x
    x = 19,323,625,572.59/159,439.88
  6. Step 6: Final answer
    x = 121,196.94

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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.