Home / 121,445.46-182,230.14-81,919.74

Finding the Fourth Proportional to 121,445.46, 182,230.14 and 81,919.74

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Solution

The fourth proportional to 121,445.46, 182,230.14 and 81,919.74 is: 122,921.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,445.46 : 182,230.14 = 81,919.74 : x
  2. Step 2: Convert to fraction form
    121,445.46/182,230.14 = 81,919.74/x
  3. Step 3: Cross multiply
    121,445.46x = 182,230.14 × 81,919.74
  4. Step 4: Simplify right side
    121,445.46x = 14,928,245,688.96
  5. Step 5: Solve for x
    x = 14,928,245,688.96/121,445.46
  6. Step 6: Final answer
    x = 122,921.40

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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.