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Finding the Fourth Proportional to 159,535.07, 220,159.88 and 87,917.66

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Solution

The fourth proportional to 159,535.07, 220,159.88 and 87,917.66 is: 121,327.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,535.07 : 220,159.88 = 87,917.66 : x
  2. Step 2: Convert to fraction form
    159,535.07/220,159.88 = 87,917.66/x
  3. Step 3: Cross multiply
    159,535.07x = 220,159.88 × 87,917.66
  4. Step 4: Simplify right side
    159,535.07x = 19,355,941,475.48
  5. Step 5: Solve for x
    x = 19,355,941,475.48/159,535.07
  6. Step 6: Final answer
    x = 121,327.19

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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.