Home / 300,139.20-450,235.92-86,904

Finding the Fourth Proportional to 300,139.20, 450,235.92 and 86,904

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Solution

The fourth proportional to 300,139.20, 450,235.92 and 86,904 is: 130,363.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,139.20 : 450,235.92 = 86,904 : x
  2. Step 2: Convert to fraction form
    300,139.20/450,235.92 = 86,904/x
  3. Step 3: Cross multiply
    300,139.20x = 450,235.92 × 86,904
  4. Step 4: Simplify right side
    300,139.20x = 39,127,302,391.68
  5. Step 5: Solve for x
    x = 39,127,302,391.68/300,139.20
  6. Step 6: Final answer
    x = 130,363.85

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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.