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Finding the Fourth Proportional to 159,037.52, 219,471.95 and 87,416.01

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Solution

The fourth proportional to 159,037.52, 219,471.95 and 87,416.01 is: 120,634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,037.52 : 219,471.95 = 87,416.01 : x
  2. Step 2: Convert to fraction form
    159,037.52/219,471.95 = 87,416.01/x
  3. Step 3: Cross multiply
    159,037.52x = 219,471.95 × 87,416.01
  4. Step 4: Simplify right side
    159,037.52x = 19,185,361,190.16
  5. Step 5: Solve for x
    x = 19,185,361,190.16/159,037.52
  6. Step 6: Final answer
    x = 120,634.18

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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.