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Finding the Fourth Proportional to 121,307.49, 167,402.11 and 67,591.35

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Solution

The fourth proportional to 121,307.49, 167,402.11 and 67,591.35 is: 93,274.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,307.49 : 167,402.11 = 67,591.35 : x
  2. Step 2: Convert to fraction form
    121,307.49/167,402.11 = 67,591.35/x
  3. Step 3: Cross multiply
    121,307.49x = 167,402.11 × 67,591.35
  4. Step 4: Simplify right side
    121,307.49x = 11,314,934,607.75
  5. Step 5: Solve for x
    x = 11,314,934,607.75/121,307.49
  6. Step 6: Final answer
    x = 93,274.82

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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.