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Finding the Fourth Proportional to 121,349.95, 167,463.72 and 67,638.38

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Solution

The fourth proportional to 121,349.95, 167,463.72 and 67,638.38 is: 93,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,349.95 : 167,463.72 = 67,638.38 : x
  2. Step 2: Convert to fraction form
    121,349.95/167,463.72 = 67,638.38/x
  3. Step 3: Cross multiply
    121,349.95x = 167,463.72 × 67,638.38
  4. Step 4: Simplify right side
    121,349.95x = 11,326,974,729.57
  5. Step 5: Solve for x
    x = 11,326,974,729.57/121,349.95
  6. Step 6: Final answer
    x = 93,341.40

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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.