Home / 185,386.96-278,163.15-85,493.53

Finding the Fourth Proportional to 185,386.96, 278,163.15 and 85,493.53

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Solution

The fourth proportional to 185,386.96, 278,163.15 and 85,493.53 is: 128,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,386.96 : 278,163.15 = 85,493.53 : x
  2. Step 2: Convert to fraction form
    185,386.96/278,163.15 = 85,493.53/x
  3. Step 3: Cross multiply
    185,386.96x = 278,163.15 × 85,493.53
  4. Step 4: Simplify right side
    185,386.96x = 23,781,149,609.42
  5. Step 5: Solve for x
    x = 23,781,149,609.42/185,386.96
  6. Step 6: Final answer
    x = 128,278.44

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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.