Home / 155,106.28-232,728.54-81,217

Finding the Fourth Proportional to 155,106.28, 232,728.54 and 81,217

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Solution

The fourth proportional to 155,106.28, 232,728.54 and 81,217 is: 121,861.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,106.28 : 232,728.54 = 81,217 : x
  2. Step 2: Convert to fraction form
    155,106.28/232,728.54 = 81,217/x
  3. Step 3: Cross multiply
    155,106.28x = 232,728.54 × 81,217
  4. Step 4: Simplify right side
    155,106.28x = 18,901,513,833.18
  5. Step 5: Solve for x
    x = 18,901,513,833.18/155,106.28
  6. Step 6: Final answer
    x = 121,861.69

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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.