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Finding the Fourth Proportional to 115,219.84, 159,024 and 67,470.40

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Solution

The fourth proportional to 115,219.84, 159,024 and 67,470.40 is: 93,121.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,219.84 : 159,024 = 67,470.40 : x
  2. Step 2: Convert to fraction form
    115,219.84/159,024 = 67,470.40/x
  3. Step 3: Cross multiply
    115,219.84x = 159,024 × 67,470.40
  4. Step 4: Simplify right side
    115,219.84x = 10,729,412,889.60
  5. Step 5: Solve for x
    x = 10,729,412,889.60/115,219.84
  6. Step 6: Final answer
    x = 93,121.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.