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Finding the Fourth Proportional to 121,544.47, 167,739.85 and 67,830.38

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Solution

The fourth proportional to 121,544.47, 167,739.85 and 67,830.38 is: 93,610.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,544.47 : 167,739.85 = 67,830.38 : x
  2. Step 2: Convert to fraction form
    121,544.47/167,739.85 = 67,830.38/x
  3. Step 3: Cross multiply
    121,544.47x = 167,739.85 × 67,830.38
  4. Step 4: Simplify right side
    121,544.47x = 11,377,857,260.21
  5. Step 5: Solve for x
    x = 11,377,857,260.21/121,544.47
  6. Step 6: Final answer
    x = 93,610.66

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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.