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Finding the Fourth Proportional to 158,604.50, 218,873.77 and 90,642.56

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Solution

The fourth proportional to 158,604.50, 218,873.77 and 90,642.56 is: 125,086.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,604.50 : 218,873.77 = 90,642.56 : x
  2. Step 2: Convert to fraction form
    158,604.50/218,873.77 = 90,642.56/x
  3. Step 3: Cross multiply
    158,604.50x = 218,873.77 × 90,642.56
  4. Step 4: Simplify right side
    158,604.50x = 19,839,278,829.65
  5. Step 5: Solve for x
    x = 19,839,278,829.65/158,604.50
  6. Step 6: Final answer
    x = 125,086.48

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1.5x scale

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.