Home / 127,787.29-191,680.94-80,941.75

Finding the Fourth Proportional to 127,787.29, 191,680.94 and 80,941.75

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Solution

The fourth proportional to 127,787.29, 191,680.94 and 80,941.75 is: 121,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,787.29 : 191,680.94 = 80,941.75 : x
  2. Step 2: Convert to fraction form
    127,787.29/191,680.94 = 80,941.75/x
  3. Step 3: Cross multiply
    127,787.29x = 191,680.94 × 80,941.75
  4. Step 4: Simplify right side
    127,787.29x = 15,514,990,725.25
  5. Step 5: Solve for x
    x = 15,514,990,725.25/127,787.29
  6. Step 6: Final answer
    x = 121,412.63

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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.