Home / 121,535,993.90-167,719,658.42-65,781,404.12

Finding the Fourth Proportional to 121,535,993.90, 167,719,658.42 and 65,781,404.12

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Solution

The fourth proportional to 121,535,993.90, 167,719,658.42 and 65,781,404.12 is: 90,778,330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,535,993.90 : 167,719,658.42 = 65,781,404.12 : x
  2. Step 2: Convert to fraction form
    121,535,993.90/167,719,658.42 = 65,781,404.12/x
  3. Step 3: Cross multiply
    121,535,993.90x = 167,719,658.42 × 65,781,404.12
  4. Step 4: Simplify right side
    121,535,993.90x = 11,032,834,629,394,380
  5. Step 5: Solve for x
    x = 11,032,834,629,394,380/121,535,993.90
  6. Step 6: Final answer
    x = 90,778,330.56

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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.