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Finding the Fourth Proportional to 159,535.62, 220,160.61 and 87,918.21

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Solution

The fourth proportional to 159,535.62, 220,160.61 and 87,918.21 is: 121,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,535.62 : 220,160.61 = 87,918.21 : x
  2. Step 2: Convert to fraction form
    159,535.62/220,160.61 = 87,918.21/x
  3. Step 3: Cross multiply
    159,535.62x = 220,160.61 × 87,918.21
  4. Step 4: Simplify right side
    159,535.62x = 19,356,126,743.71
  5. Step 5: Solve for x
    x = 19,356,126,743.71/159,535.62
  6. Step 6: Final answer
    x = 121,327.93

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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.