Home / 155,107.28-232,730.04-81,218

Finding the Fourth Proportional to 155,107.28, 232,730.04 and 81,218

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Solution

The fourth proportional to 155,107.28, 232,730.04 and 81,218 is: 121,863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,107.28 : 232,730.04 = 81,218 : x
  2. Step 2: Convert to fraction form
    155,107.28/232,730.04 = 81,218/x
  3. Step 3: Cross multiply
    155,107.28x = 232,730.04 × 81,218
  4. Step 4: Simplify right side
    155,107.28x = 18,901,868,388.72
  5. Step 5: Solve for x
    x = 18,901,868,388.72/155,107.28
  6. Step 6: Final answer
    x = 121,863.19

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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.