Home / 228,789.36-342,981-86,535.12

Finding the Fourth Proportional to 228,789.36, 342,981 and 86,535.12

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Solution

The fourth proportional to 228,789.36, 342,981 and 86,535.12 is: 129,725.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,789.36 : 342,981 = 86,535.12 : x
  2. Step 2: Convert to fraction form
    228,789.36/342,981 = 86,535.12/x
  3. Step 3: Cross multiply
    228,789.36x = 342,981 × 86,535.12
  4. Step 4: Simplify right side
    228,789.36x = 29,679,901,992.72
  5. Step 5: Solve for x
    x = 29,679,901,992.72/228,789.36
  6. Step 6: Final answer
    x = 129,725.88

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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.