Home / 158,543.05-218,791.20-90,569.02

Finding the Fourth Proportional to 158,543.05, 218,791.20 and 90,569.02

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Solution

The fourth proportional to 158,543.05, 218,791.20 and 90,569.02 is: 124,986.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,543.05 : 218,791.20 = 90,569.02 : x
  2. Step 2: Convert to fraction form
    158,543.05/218,791.20 = 90,569.02/x
  3. Step 3: Cross multiply
    158,543.05x = 218,791.20 × 90,569.02
  4. Step 4: Simplify right side
    158,543.05x = 19,815,704,568.62
  5. Step 5: Solve for x
    x = 19,815,704,568.62/158,543.05
  6. Step 6: Final answer
    x = 124,986.27

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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.