Home / 121,729.43-182,346.19-99,319.97

Finding the Fourth Proportional to 121,729.43, 182,346.19 and 99,319.97

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Solution

The fourth proportional to 121,729.43, 182,346.19 and 99,319.97 is: 148,777.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,729.43 : 182,346.19 = 99,319.97 : x
  2. Step 2: Convert to fraction form
    121,729.43/182,346.19 = 99,319.97/x
  3. Step 3: Cross multiply
    121,729.43x = 182,346.19 × 99,319.97
  4. Step 4: Simplify right side
    121,729.43x = 18,110,618,327.98
  5. Step 5: Solve for x
    x = 18,110,618,327.98/121,729.43
  6. Step 6: Final answer
    x = 148,777.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.