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Finding the Fourth Proportional to 121,392.68, 167,513.33 and 67,680.63

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Solution

The fourth proportional to 121,392.68, 167,513.33 and 67,680.63 is: 93,394.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,392.68 : 167,513.33 = 67,680.63 : x
  2. Step 2: Convert to fraction form
    121,392.68/167,513.33 = 67,680.63/x
  3. Step 3: Cross multiply
    121,392.68x = 167,513.33 × 67,680.63
  4. Step 4: Simplify right side
    121,392.68x = 11,337,407,877.00
  5. Step 5: Solve for x
    x = 11,337,407,877.00/121,392.68
  6. Step 6: Final answer
    x = 93,394.50

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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.