Home / 121,222.66-181,785.38-71,315.86

Finding the Fourth Proportional to 121,222.66, 181,785.38 and 71,315.86

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Solution

The fourth proportional to 121,222.66, 181,785.38 and 71,315.86 is: 106,945.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,222.66 : 181,785.38 = 71,315.86 : x
  2. Step 2: Convert to fraction form
    121,222.66/181,785.38 = 71,315.86/x
  3. Step 3: Cross multiply
    121,222.66x = 181,785.38 × 71,315.86
  4. Step 4: Simplify right side
    121,222.66x = 12,964,180,710.13
  5. Step 5: Solve for x
    x = 12,964,180,710.13/121,222.66
  6. Step 6: Final answer
    x = 106,945.19

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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.