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Finding the Fourth Proportional to 121,015.80, 167,001.78 and 68,023.80

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Solution

The fourth proportional to 121,015.80, 167,001.78 and 68,023.80 is: 93,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,015.80 : 167,001.78 = 68,023.80 : x
  2. Step 2: Convert to fraction form
    121,015.80/167,001.78 = 68,023.80/x
  3. Step 3: Cross multiply
    121,015.80x = 167,001.78 × 68,023.80
  4. Step 4: Simplify right side
    121,015.80x = 11,360,095,682.36
  5. Step 5: Solve for x
    x = 11,360,095,682.36/121,015.80
  6. Step 6: Final answer
    x = 93,872.83

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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.