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Finding the Fourth Proportional to 121,640.52, 167,864.74 and 67,926.18

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Solution

The fourth proportional to 121,640.52, 167,864.74 and 67,926.18 is: 93,738.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,640.52 : 167,864.74 = 67,926.18 : x
  2. Step 2: Convert to fraction form
    121,640.52/167,864.74 = 67,926.18/x
  3. Step 3: Cross multiply
    121,640.52x = 167,864.74 × 67,926.18
  4. Step 4: Simplify right side
    121,640.52x = 11,402,410,544.89
  5. Step 5: Solve for x
    x = 11,402,410,544.89/121,640.52
  6. Step 6: Final answer
    x = 93,738.59

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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.