Home / 121,346.20-182,019.30-91,821.70

Finding the Fourth Proportional to 121,346.20, 182,019.30 and 91,821.70

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Solution

The fourth proportional to 121,346.20, 182,019.30 and 91,821.70 is: 137,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,346.20 : 182,019.30 = 91,821.70 : x
  2. Step 2: Convert to fraction form
    121,346.20/182,019.30 = 91,821.70/x
  3. Step 3: Cross multiply
    121,346.20x = 182,019.30 × 91,821.70
  4. Step 4: Simplify right side
    121,346.20x = 16,713,321,558.81
  5. Step 5: Solve for x
    x = 16,713,321,558.81/121,346.20
  6. Step 6: Final answer
    x = 137,732.55

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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.