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Finding the Fourth Proportional to 121,100.66, 167,165.41 and 90,973.37

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Solution

The fourth proportional to 121,100.66, 167,165.41 and 90,973.37 is: 125,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,100.66 : 167,165.41 = 90,973.37 : x
  2. Step 2: Convert to fraction form
    121,100.66/167,165.41 = 90,973.37/x
  3. Step 3: Cross multiply
    121,100.66x = 167,165.41 × 90,973.37
  4. Step 4: Simplify right side
    121,100.66x = 15,207,600,695.13
  5. Step 5: Solve for x
    x = 15,207,600,695.13/121,100.66
  6. Step 6: Final answer
    x = 125,578.18

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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.