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Finding the Fourth Proportional to 153,879.57, 231,225.30 and 82,854.72

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Solution

The fourth proportional to 153,879.57, 231,225.30 and 82,854.72 is: 124,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,879.57 : 231,225.30 = 82,854.72 : x
  2. Step 2: Convert to fraction form
    153,879.57/231,225.30 = 82,854.72/x
  3. Step 3: Cross multiply
    153,879.57x = 231,225.30 × 82,854.72
  4. Step 4: Simplify right side
    153,879.57x = 19,158,107,488.42
  5. Step 5: Solve for x
    x = 19,158,107,488.42/153,879.57
  6. Step 6: Final answer
    x = 124,500.66

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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.