Home / 155,025.28-213,787.92-101,356.30

Finding the Fourth Proportional to 155,025.28, 213,787.92 and 101,356.30

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Solution

The fourth proportional to 155,025.28, 213,787.92 and 101,356.30 is: 139,775.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,025.28 : 213,787.92 = 101,356.30 : x
  2. Step 2: Convert to fraction form
    155,025.28/213,787.92 = 101,356.30/x
  3. Step 3: Cross multiply
    155,025.28x = 213,787.92 × 101,356.30
  4. Step 4: Simplify right side
    155,025.28x = 21,668,752,555.90
  5. Step 5: Solve for x
    x = 21,668,752,555.90/155,025.28
  6. Step 6: Final answer
    x = 139,775.61

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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.