Home / 121,521.20-182,281.80-91,996.70

Finding the Fourth Proportional to 121,521.20, 182,281.80 and 91,996.70

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Solution

The fourth proportional to 121,521.20, 182,281.80 and 91,996.70 is: 137,995.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,521.20 : 182,281.80 = 91,996.70 : x
  2. Step 2: Convert to fraction form
    121,521.20/182,281.80 = 91,996.70/x
  3. Step 3: Cross multiply
    121,521.20x = 182,281.80 × 91,996.70
  4. Step 4: Simplify right side
    121,521.20x = 16,769,324,070.06
  5. Step 5: Solve for x
    x = 16,769,324,070.06/121,521.20
  6. Step 6: Final answer
    x = 137,995.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.