Home / 115,990.20-160,077.60-65,002.68

Finding the Fourth Proportional to 115,990.20, 160,077.60 and 65,002.68

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Solution

The fourth proportional to 115,990.20, 160,077.60 and 65,002.68 is: 89,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,990.20 : 160,077.60 = 65,002.68 : x
  2. Step 2: Convert to fraction form
    115,990.20/160,077.60 = 65,002.68/x
  3. Step 3: Cross multiply
    115,990.20x = 160,077.60 × 65,002.68
  4. Step 4: Simplify right side
    115,990.20x = 10,405,473,007.97
  5. Step 5: Solve for x
    x = 10,405,473,007.97/115,990.20
  6. Step 6: Final answer
    x = 89,709.93

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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.