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Finding the Fourth Proportional to 158,615.75, 218,886.75 and 89,704.29

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Solution

The fourth proportional to 158,615.75, 218,886.75 and 89,704.29 is: 123,790.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,615.75 : 218,886.75 = 89,704.29 : x
  2. Step 2: Convert to fraction form
    158,615.75/218,886.75 = 89,704.29/x
  3. Step 3: Cross multiply
    158,615.75x = 218,886.75 × 89,704.29
  4. Step 4: Simplify right side
    158,615.75x = 19,635,080,499.16
  5. Step 5: Solve for x
    x = 19,635,080,499.16/158,615.75
  6. Step 6: Final answer
    x = 123,790.24

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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.