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Finding the Fourth Proportional to 158,642.27, 218,925.74 and 98,200.88

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Solution

The fourth proportional to 158,642.27, 218,925.74 and 98,200.88 is: 135,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,642.27 : 218,925.74 = 98,200.88 : x
  2. Step 2: Convert to fraction form
    158,642.27/218,925.74 = 98,200.88/x
  3. Step 3: Cross multiply
    158,642.27x = 218,925.74 × 98,200.88
  4. Step 4: Simplify right side
    158,642.27x = 21,498,700,322.65
  5. Step 5: Solve for x
    x = 21,498,700,322.65/158,642.27
  6. Step 6: Final answer
    x = 135,516.85

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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.