Home / 130,390.40-179,932.56-80,079.68

Finding the Fourth Proportional to 130,390.40, 179,932.56 and 80,079.68

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Solution

The fourth proportional to 130,390.40, 179,932.56 and 80,079.68 is: 110,506.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,390.40 : 179,932.56 = 80,079.68 : x
  2. Step 2: Convert to fraction form
    130,390.40/179,932.56 = 80,079.68/x
  3. Step 3: Cross multiply
    130,390.40x = 179,932.56 × 80,079.68
  4. Step 4: Simplify right side
    130,390.40x = 14,408,941,826.38
  5. Step 5: Solve for x
    x = 14,408,941,826.38/130,390.40
  6. Step 6: Final answer
    x = 110,506.16

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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.