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Finding the Fourth Proportional to 151,719.20, 227,578.80 and 77,069.60

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Solution

The fourth proportional to 151,719.20, 227,578.80 and 77,069.60 is: 115,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,719.20 : 227,578.80 = 77,069.60 : x
  2. Step 2: Convert to fraction form
    151,719.20/227,578.80 = 77,069.60/x
  3. Step 3: Cross multiply
    151,719.20x = 227,578.80 × 77,069.60
  4. Step 4: Simplify right side
    151,719.20x = 17,539,407,084.48
  5. Step 5: Solve for x
    x = 17,539,407,084.48/151,719.20
  6. Step 6: Final answer
    x = 115,604.40

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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.