Home / 159,519.26-220,146.40-87,899.28

Finding the Fourth Proportional to 159,519.26, 220,146.40 and 87,899.28

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Solution

The fourth proportional to 159,519.26, 220,146.40 and 87,899.28 is: 121,306.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,519.26 : 220,146.40 = 87,899.28 : x
  2. Step 2: Convert to fraction form
    159,519.26/220,146.40 = 87,899.28/x
  3. Step 3: Cross multiply
    159,519.26x = 220,146.40 × 87,899.28
  4. Step 4: Simplify right side
    159,519.26x = 19,350,710,054.59
  5. Step 5: Solve for x
    x = 19,350,710,054.59/159,519.26
  6. Step 6: Final answer
    x = 121,306.42

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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.