Home / 121,025.80-181,538.70-89,921.80

Finding the Fourth Proportional to 121,025.80, 181,538.70 and 89,921.80

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Solution

The fourth proportional to 121,025.80, 181,538.70 and 89,921.80 is: 134,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,025.80 : 181,538.70 = 89,921.80 : x
  2. Step 2: Convert to fraction form
    121,025.80/181,538.70 = 89,921.80/x
  3. Step 3: Cross multiply
    121,025.80x = 181,538.70 × 89,921.80
  4. Step 4: Simplify right side
    121,025.80x = 16,324,286,673.66
  5. Step 5: Solve for x
    x = 16,324,286,673.66/121,025.80
  6. Step 6: Final answer
    x = 134,882.70

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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.