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Finding the Fourth Proportional to 121,449.56, 182,189.64 and 65,212.40

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Solution

The fourth proportional to 121,449.56, 182,189.64 and 65,212.40 is: 97,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,449.56 : 182,189.64 = 65,212.40 : x
  2. Step 2: Convert to fraction form
    121,449.56/182,189.64 = 65,212.40/x
  3. Step 3: Cross multiply
    121,449.56x = 182,189.64 × 65,212.40
  4. Step 4: Simplify right side
    121,449.56x = 11,881,023,679.54
  5. Step 5: Solve for x
    x = 11,881,023,679.54/121,449.56
  6. Step 6: Final answer
    x = 97,826.82

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1.5x scale

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.