Home / 130,387.29-179,928.23-80,076.57

Finding the Fourth Proportional to 130,387.29, 179,928.23 and 80,076.57

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Solution

The fourth proportional to 130,387.29, 179,928.23 and 80,076.57 is: 110,501.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,387.29 : 179,928.23 = 80,076.57 : x
  2. Step 2: Convert to fraction form
    130,387.29/179,928.23 = 80,076.57/x
  3. Step 3: Cross multiply
    130,387.29x = 179,928.23 × 80,076.57
  4. Step 4: Simplify right side
    130,387.29x = 14,408,035,504.57
  5. Step 5: Solve for x
    x = 14,408,035,504.57/130,387.29
  6. Step 6: Final answer
    x = 110,501.84

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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.