Home / 81,452.15-122,148.25-28,130.56

Finding the Fourth Proportional to 81,452.15, 122,148.25 and 28,130.56

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Solution

The fourth proportional to 81,452.15, 122,148.25 and 28,130.56 is: 42,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,452.15 : 122,148.25 = 28,130.56 : x
  2. Step 2: Convert to fraction form
    81,452.15/122,148.25 = 28,130.56/x
  3. Step 3: Cross multiply
    81,452.15x = 122,148.25 × 28,130.56
  4. Step 4: Simplify right side
    81,452.15x = 3,436,098,675.52
  5. Step 5: Solve for x
    x = 3,436,098,675.52/81,452.15
  6. Step 6: Final answer
    x = 42,185.49

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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.