Home / 81,256.70-121,589.60-67,084.94

Finding the Fourth Proportional to 81,256.70, 121,589.60 and 67,084.94

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Solution

The fourth proportional to 81,256.70, 121,589.60 and 67,084.94 is: 100,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,256.70 : 121,589.60 = 67,084.94 : x
  2. Step 2: Convert to fraction form
    81,256.70/121,589.60 = 67,084.94/x
  3. Step 3: Cross multiply
    81,256.70x = 121,589.60 × 67,084.94
  4. Step 4: Simplify right side
    81,256.70x = 8,156,830,077.25
  5. Step 5: Solve for x
    x = 8,156,830,077.25/81,256.70
  6. Step 6: Final answer
    x = 100,383.48

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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.