Home / 80,900.31-121,339.13-34,142.25

Finding the Fourth Proportional to 80,900.31, 121,339.13 and 34,142.25

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Solution

The fourth proportional to 80,900.31, 121,339.13 and 34,142.25 is: 51,208.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,900.31 : 121,339.13 = 34,142.25 : x
  2. Step 2: Convert to fraction form
    80,900.31/121,339.13 = 34,142.25/x
  3. Step 3: Cross multiply
    80,900.31x = 121,339.13 × 34,142.25
  4. Step 4: Simplify right side
    80,900.31x = 4,142,790,740.53
  5. Step 5: Solve for x
    x = 4,142,790,740.53/80,900.31
  6. Step 6: Final answer
    x = 51,208.59

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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.