Home / 129,342.40-194,013.60-120,011.20

Finding the Fourth Proportional to 129,342.40, 194,013.60 and 120,011.20

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Solution

The fourth proportional to 129,342.40, 194,013.60 and 120,011.20 is: 180,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,342.40 : 194,013.60 = 120,011.20 : x
  2. Step 2: Convert to fraction form
    129,342.40/194,013.60 = 120,011.20/x
  3. Step 3: Cross multiply
    129,342.40x = 194,013.60 × 120,011.20
  4. Step 4: Simplify right side
    129,342.40x = 23,283,804,952.32
  5. Step 5: Solve for x
    x = 23,283,804,952.32/129,342.40
  6. Step 6: Final answer
    x = 180,016.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.