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Finding the Fourth Proportional to 121,483.80, 167,647.39 and 67,765.61

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Solution

The fourth proportional to 121,483.80, 167,647.39 and 67,765.61 is: 93,516.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,483.80 : 167,647.39 = 67,765.61 : x
  2. Step 2: Convert to fraction form
    121,483.80/167,647.39 = 67,765.61/x
  3. Step 3: Cross multiply
    121,483.80x = 167,647.39 × 67,765.61
  4. Step 4: Simplify right side
    121,483.80x = 11,360,727,897.96
  5. Step 5: Solve for x
    x = 11,360,727,897.96/121,483.80
  6. Step 6: Final answer
    x = 93,516.40

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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.