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Finding the Fourth Proportional to 157,881.44, 217,879.52 and 86,265.90

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Solution

The fourth proportional to 157,881.44, 217,879.52 and 86,265.90 is: 119,048.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,881.44 : 217,879.52 = 86,265.90 : x
  2. Step 2: Convert to fraction form
    157,881.44/217,879.52 = 86,265.90/x
  3. Step 3: Cross multiply
    157,881.44x = 217,879.52 × 86,265.90
  4. Step 4: Simplify right side
    157,881.44x = 18,795,572,453.04
  5. Step 5: Solve for x
    x = 18,795,572,453.04/157,881.44
  6. Step 6: Final answer
    x = 119,048.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.