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Finding the Fourth Proportional to 119,732.80, 179,620.80 and 60,419.20

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Solution

The fourth proportional to 119,732.80, 179,620.80 and 60,419.20 is: 90,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,732.80 : 179,620.80 = 60,419.20 : x
  2. Step 2: Convert to fraction form
    119,732.80/179,620.80 = 60,419.20/x
  3. Step 3: Cross multiply
    119,732.80x = 179,620.80 × 60,419.20
  4. Step 4: Simplify right side
    119,732.80x = 10,852,545,039.36
  5. Step 5: Solve for x
    x = 10,852,545,039.36/119,732.80
  6. Step 6: Final answer
    x = 90,639.70

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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.