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Finding the Fourth Proportional to 115,351.20, 159,157.40 and 65,040.48

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Solution

The fourth proportional to 115,351.20, 159,157.40 and 65,040.48 is: 89,740.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,351.20 : 159,157.40 = 65,040.48 : x
  2. Step 2: Convert to fraction form
    115,351.20/159,157.40 = 65,040.48/x
  3. Step 3: Cross multiply
    115,351.20x = 159,157.40 × 65,040.48
  4. Step 4: Simplify right side
    115,351.20x = 10,351,673,691.55
  5. Step 5: Solve for x
    x = 10,351,673,691.55/115,351.20
  6. Step 6: Final answer
    x = 89,740.49

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1.5x scale

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.