Home / 121,031.71-167,021.24-66,581.59

Finding the Fourth Proportional to 121,031.71, 167,021.24 and 66,581.59

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Solution

The fourth proportional to 121,031.71, 167,021.24 and 66,581.59 is: 91,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,031.71 : 167,021.24 = 66,581.59 : x
  2. Step 2: Convert to fraction form
    121,031.71/167,021.24 = 66,581.59/x
  3. Step 3: Cross multiply
    121,031.71x = 167,021.24 × 66,581.59
  4. Step 4: Simplify right side
    121,031.71x = 11,120,539,722.97
  5. Step 5: Solve for x
    x = 11,120,539,722.97/121,031.71
  6. Step 6: Final answer
    x = 91,881.21

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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.