Home / 239,081.60-329,919.72-137,111.36

Finding the Fourth Proportional to 239,081.60, 329,919.72 and 137,111.36

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Solution

The fourth proportional to 239,081.60, 329,919.72 and 137,111.36 is: 189,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,081.60 : 329,919.72 = 137,111.36 : x
  2. Step 2: Convert to fraction form
    239,081.60/329,919.72 = 137,111.36/x
  3. Step 3: Cross multiply
    239,081.60x = 329,919.72 × 137,111.36
  4. Step 4: Simplify right side
    239,081.60x = 45,235,741,500.02
  5. Step 5: Solve for x
    x = 45,235,741,500.02/239,081.60
  6. Step 6: Final answer
    x = 189,206.29

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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.