Home / 121,327.40-181,991.10-100,332.20

Finding the Fourth Proportional to 121,327.40, 181,991.10 and 100,332.20

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Solution

The fourth proportional to 121,327.40, 181,991.10 and 100,332.20 is: 150,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,327.40 : 181,991.10 = 100,332.20 : x
  2. Step 2: Convert to fraction form
    121,327.40/181,991.10 = 100,332.20/x
  3. Step 3: Cross multiply
    121,327.40x = 181,991.10 × 100,332.20
  4. Step 4: Simplify right side
    121,327.40x = 18,259,567,443.42
  5. Step 5: Solve for x
    x = 18,259,567,443.42/121,327.40
  6. Step 6: Final answer
    x = 150,498.30

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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.