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Finding the Fourth Proportional to 119,656.30, 179,449.88 and 40,768.78

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Solution

The fourth proportional to 119,656.30, 179,449.88 and 40,768.78 is: 61,141.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,656.30 : 179,449.88 = 40,768.78 : x
  2. Step 2: Convert to fraction form
    119,656.30/179,449.88 = 40,768.78/x
  3. Step 3: Cross multiply
    119,656.30x = 179,449.88 × 40,768.78
  4. Step 4: Simplify right side
    119,656.30x = 7,315,952,678.75
  5. Step 5: Solve for x
    x = 7,315,952,678.75/119,656.30
  6. Step 6: Final answer
    x = 61,141.39

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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.