Home / 121,595.52-167,772.20-71,284.80

Finding the Fourth Proportional to 121,595.52, 167,772.20 and 71,284.80

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Solution

The fourth proportional to 121,595.52, 167,772.20 and 71,284.80 is: 98,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,595.52 : 167,772.20 = 71,284.80 : x
  2. Step 2: Convert to fraction form
    121,595.52/167,772.20 = 71,284.80/x
  3. Step 3: Cross multiply
    121,595.52x = 167,772.20 × 71,284.80
  4. Step 4: Simplify right side
    121,595.52x = 11,959,607,722.56
  5. Step 5: Solve for x
    x = 11,959,607,722.56/121,595.52
  6. Step 6: Final answer
    x = 98,355.66

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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.