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Finding the Fourth Proportional to 159,699.56, 220,395.48 and 88,079.72

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Solution

The fourth proportional to 159,699.56, 220,395.48 and 88,079.72 is: 121,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,699.56 : 220,395.48 = 88,079.72 : x
  2. Step 2: Convert to fraction form
    159,699.56/220,395.48 = 88,079.72/x
  3. Step 3: Cross multiply
    159,699.56x = 220,395.48 × 88,079.72
  4. Step 4: Simplify right side
    159,699.56x = 19,412,372,167.67
  5. Step 5: Solve for x
    x = 19,412,372,167.67/159,699.56
  6. Step 6: Final answer
    x = 121,555.58

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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.