Home / 121,422.36-167,502.66-81,148.74

Finding the Fourth Proportional to 121,422.36, 167,502.66 and 81,148.74

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Solution

The fourth proportional to 121,422.36, 167,502.66 and 81,148.74 is: 111,945.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,422.36 : 167,502.66 = 81,148.74 : x
  2. Step 2: Convert to fraction form
    121,422.36/167,502.66 = 81,148.74/x
  3. Step 3: Cross multiply
    121,422.36x = 167,502.66 × 81,148.74
  4. Step 4: Simplify right side
    121,422.36x = 13,592,629,805.65
  5. Step 5: Solve for x
    x = 13,592,629,805.65/121,422.36
  6. Step 6: Final answer
    x = 111,945.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.