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Finding the Fourth Proportional to 158,571, 218,827.98 and 91,541.88

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Solution

The fourth proportional to 158,571, 218,827.98 and 91,541.88 is: 126,327.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,571 : 218,827.98 = 91,541.88 : x
  2. Step 2: Convert to fraction form
    158,571/218,827.98 = 91,541.88/x
  3. Step 3: Cross multiply
    158,571x = 218,827.98 × 91,541.88
  4. Step 4: Simplify right side
    158,571x = 20,031,924,685.80
  5. Step 5: Solve for x
    x = 20,031,924,685.80/158,571
  6. Step 6: Final answer
    x = 126,327.79

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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.