Home / 151,763.20-209,432.07-83,780.20

Finding the Fourth Proportional to 151,763.20, 209,432.07 and 83,780.20

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Solution

The fourth proportional to 151,763.20, 209,432.07 and 83,780.20 is: 115,616.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,763.20 : 209,432.07 = 83,780.20 : x
  2. Step 2: Convert to fraction form
    151,763.20/209,432.07 = 83,780.20/x
  3. Step 3: Cross multiply
    151,763.20x = 209,432.07 × 83,780.20
  4. Step 4: Simplify right side
    151,763.20x = 17,546,260,711.01
  5. Step 5: Solve for x
    x = 17,546,260,711.01/151,763.20
  6. Step 6: Final answer
    x = 115,616.04

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1.5x scale

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.