Home / 121,161.30-181,960.65-87,918.90

Finding the Fourth Proportional to 121,161.30, 181,960.65 and 87,918.90

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Solution

The fourth proportional to 121,161.30, 181,960.65 and 87,918.90 is: 132,037.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,161.30 : 181,960.65 = 87,918.90 : x
  2. Step 2: Convert to fraction form
    121,161.30/181,960.65 = 87,918.90/x
  3. Step 3: Cross multiply
    121,161.30x = 181,960.65 × 87,918.90
  4. Step 4: Simplify right side
    121,161.30x = 15,997,780,191.29
  5. Step 5: Solve for x
    x = 15,997,780,191.29/121,161.30
  6. Step 6: Final answer
    x = 132,037.05

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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.