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Finding the Fourth Proportional to 121,172.98, 167,194.29 and 73,398.58

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Solution

The fourth proportional to 121,172.98, 167,194.29 and 73,398.58 is: 101,275.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,172.98 : 167,194.29 = 73,398.58 : x
  2. Step 2: Convert to fraction form
    121,172.98/167,194.29 = 73,398.58/x
  3. Step 3: Cross multiply
    121,172.98x = 167,194.29 × 73,398.58
  4. Step 4: Simplify right side
    121,172.98x = 12,271,823,470.11
  5. Step 5: Solve for x
    x = 12,271,823,470.11/121,172.98
  6. Step 6: Final answer
    x = 101,275.25

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1.5x scale

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.