Home / 121,330.80-181,996.20-42,434.78

Finding the Fourth Proportional to 121,330.80, 181,996.20 and 42,434.78

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Solution

The fourth proportional to 121,330.80, 181,996.20 and 42,434.78 is: 63,652.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,330.80 : 181,996.20 = 42,434.78 : x
  2. Step 2: Convert to fraction form
    121,330.80/181,996.20 = 42,434.78/x
  3. Step 3: Cross multiply
    121,330.80x = 181,996.20 × 42,434.78
  4. Step 4: Simplify right side
    121,330.80x = 7,722,967,797.86
  5. Step 5: Solve for x
    x = 7,722,967,797.86/121,330.80
  6. Step 6: Final answer
    x = 63,652.16

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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.