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Finding the Fourth Proportional to 119,167.80, 178,751.66 and 30,421.28

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Solution

The fourth proportional to 119,167.80, 178,751.66 and 30,421.28 is: 45,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,167.80 : 178,751.66 = 30,421.28 : x
  2. Step 2: Convert to fraction form
    119,167.80/178,751.66 = 30,421.28/x
  3. Step 3: Cross multiply
    119,167.80x = 178,751.66 × 30,421.28
  4. Step 4: Simplify right side
    119,167.80x = 5,437,854,299.32
  5. Step 5: Solve for x
    x = 5,437,854,299.32/119,167.80
  6. Step 6: Final answer
    x = 45,631.91

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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.