Home / 155,209.28-232,883.04-81,320

Finding the Fourth Proportional to 155,209.28, 232,883.04 and 81,320

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Solution

The fourth proportional to 155,209.28, 232,883.04 and 81,320 is: 122,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,209.28 : 232,883.04 = 81,320 : x
  2. Step 2: Convert to fraction form
    155,209.28/232,883.04 = 81,320/x
  3. Step 3: Cross multiply
    155,209.28x = 232,883.04 × 81,320
  4. Step 4: Simplify right side
    155,209.28x = 18,938,048,812.80
  5. Step 5: Solve for x
    x = 18,938,048,812.80/155,209.28
  6. Step 6: Final answer
    x = 122,016.21

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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.