Home / 119,419.28-178,687.08-72,061.76

Finding the Fourth Proportional to 119,419.28, 178,687.08 and 72,061.76

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Solution

The fourth proportional to 119,419.28, 178,687.08 and 72,061.76 is: 107,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,419.28 : 178,687.08 = 72,061.76 : x
  2. Step 2: Convert to fraction form
    119,419.28/178,687.08 = 72,061.76/x
  3. Step 3: Cross multiply
    119,419.28x = 178,687.08 × 72,061.76
  4. Step 4: Simplify right side
    119,419.28x = 12,876,505,474.06
  5. Step 5: Solve for x
    x = 12,876,505,474.06/119,419.28
  6. Step 6: Final answer
    x = 107,826.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.