Home / 130,387.40-179,928.42-80,076.68

Finding the Fourth Proportional to 130,387.40, 179,928.42 and 80,076.68

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Solution

The fourth proportional to 130,387.40, 179,928.42 and 80,076.68 is: 110,502.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,387.40 : 179,928.42 = 80,076.68 : x
  2. Step 2: Convert to fraction form
    130,387.40/179,928.42 = 80,076.68/x
  3. Step 3: Cross multiply
    130,387.40x = 179,928.42 × 80,076.68
  4. Step 4: Simplify right side
    130,387.40x = 14,408,070,511.25
  5. Step 5: Solve for x
    x = 14,408,070,511.25/130,387.40
  6. Step 6: Final answer
    x = 110,502.02

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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.