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Finding the Fourth Proportional to 121,109.88, 167,151.66 and 70,799.16

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Solution

The fourth proportional to 121,109.88, 167,151.66 and 70,799.16 is: 97,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,109.88 : 167,151.66 = 70,799.16 : x
  2. Step 2: Convert to fraction form
    121,109.88/167,151.66 = 70,799.16/x
  3. Step 3: Cross multiply
    121,109.88x = 167,151.66 × 70,799.16
  4. Step 4: Simplify right side
    121,109.88x = 11,834,197,120.61
  5. Step 5: Solve for x
    x = 11,834,197,120.61/121,109.88
  6. Step 6: Final answer
    x = 97,714.55

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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.