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Finding the Fourth Proportional to 121,640.72, 167,864.43 and 67,925.57

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Solution

The fourth proportional to 121,640.72, 167,864.43 and 67,925.57 is: 93,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,640.72 : 167,864.43 = 67,925.57 : x
  2. Step 2: Convert to fraction form
    121,640.72/167,864.43 = 67,925.57/x
  3. Step 3: Cross multiply
    121,640.72x = 167,864.43 × 67,925.57
  4. Step 4: Simplify right side
    121,640.72x = 11,402,287,090.48
  5. Step 5: Solve for x
    x = 11,402,287,090.48/121,640.72
  6. Step 6: Final answer
    x = 93,737.42

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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.