Home / 130,816.88-180,591.29-87,780.97

Finding the Fourth Proportional to 130,816.88, 180,591.29 and 87,780.97

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Solution

The fourth proportional to 130,816.88, 180,591.29 and 87,780.97 is: 121,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,816.88 : 180,591.29 = 87,780.97 : x
  2. Step 2: Convert to fraction form
    130,816.88/180,591.29 = 87,780.97/x
  3. Step 3: Cross multiply
    130,816.88x = 180,591.29 × 87,780.97
  4. Step 4: Simplify right side
    130,816.88x = 15,852,478,609.75
  5. Step 5: Solve for x
    x = 15,852,478,609.75/130,816.88
  6. Step 6: Final answer
    x = 121,180.68

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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.