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Finding the Fourth Proportional to 158,519.97, 218,766.36 and 90,559.01

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Solution

The fourth proportional to 158,519.97, 218,766.36 and 90,559.01 is: 124,976.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,519.97 : 218,766.36 = 90,559.01 : x
  2. Step 2: Convert to fraction form
    158,519.97/218,766.36 = 90,559.01/x
  3. Step 3: Cross multiply
    158,519.97x = 218,766.36 × 90,559.01
  4. Step 4: Simplify right side
    158,519.97x = 19,811,265,614.72
  5. Step 5: Solve for x
    x = 19,811,265,614.72/158,519.97
  6. Step 6: Final answer
    x = 124,976.47

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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.