Home / 159,434.24-220,020.60-87,816.72

Finding the Fourth Proportional to 159,434.24, 220,020.60 and 87,816.72

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Solution

The fourth proportional to 159,434.24, 220,020.60 and 87,816.72 is: 121,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,434.24 : 220,020.60 = 87,816.72 : x
  2. Step 2: Convert to fraction form
    159,434.24/220,020.60 = 87,816.72/x
  3. Step 3: Cross multiply
    159,434.24x = 220,020.60 × 87,816.72
  4. Step 4: Simplify right side
    159,434.24x = 19,321,487,424.43
  5. Step 5: Solve for x
    x = 19,321,487,424.43/159,434.24
  6. Step 6: Final answer
    x = 121,187.82

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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.