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Finding the Fourth Proportional to 155,428.74, 232,838.01 and 80,597.79

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Solution

The fourth proportional to 155,428.74, 232,838.01 and 80,597.79 is: 120,738.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,428.74 : 232,838.01 = 80,597.79 : x
  2. Step 2: Convert to fraction form
    155,428.74/232,838.01 = 80,597.79/x
  3. Step 3: Cross multiply
    155,428.74x = 232,838.01 × 80,597.79
  4. Step 4: Simplify right side
    155,428.74x = 18,766,229,034.00
  5. Step 5: Solve for x
    x = 18,766,229,034.00/155,428.74
  6. Step 6: Final answer
    x = 120,738.47

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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.