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Finding the Fourth Proportional to 157,879.56, 217,876.93 and 86,264.02

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Solution

The fourth proportional to 157,879.56, 217,876.93 and 86,264.02 is: 119,046.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,879.56 : 217,876.93 = 86,264.02 : x
  2. Step 2: Convert to fraction form
    157,879.56/217,876.93 = 86,264.02/x
  3. Step 3: Cross multiply
    157,879.56x = 217,876.93 × 86,264.02
  4. Step 4: Simplify right side
    157,879.56x = 18,794,939,086.71
  5. Step 5: Solve for x
    x = 18,794,939,086.71/157,879.56
  6. Step 6: Final answer
    x = 119,046.06

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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.