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Finding the Fourth Proportional to 119,815.68, 179,879.04 and 92,133.12

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Solution

The fourth proportional to 119,815.68, 179,879.04 and 92,133.12 is: 138,319.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,815.68 : 179,879.04 = 92,133.12 : x
  2. Step 2: Convert to fraction form
    119,815.68/179,879.04 = 92,133.12/x
  3. Step 3: Cross multiply
    119,815.68x = 179,879.04 × 92,133.12
  4. Step 4: Simplify right side
    119,815.68x = 16,572,817,177.80
  5. Step 5: Solve for x
    x = 16,572,817,177.80/119,815.68
  6. Step 6: Final answer
    x = 138,319.27

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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.