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Finding the Fourth Proportional to 119,672.02, 179,338.54 and 66,387.28

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Solution

The fourth proportional to 119,672.02, 179,338.54 and 66,387.28 is: 99,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,672.02 : 179,338.54 = 66,387.28 : x
  2. Step 2: Convert to fraction form
    119,672.02/179,338.54 = 66,387.28/x
  3. Step 3: Cross multiply
    119,672.02x = 179,338.54 × 66,387.28
  4. Step 4: Simplify right side
    119,672.02x = 11,905,797,869.77
  5. Step 5: Solve for x
    x = 11,905,797,869.77/119,672.02
  6. Step 6: Final answer
    x = 99,486.90

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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.