Home / 115,505.22-159,395.46-64,518.78

Finding the Fourth Proportional to 115,505.22, 159,395.46 and 64,518.78

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Solution

The fourth proportional to 115,505.22, 159,395.46 and 64,518.78 is: 89,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,505.22 : 159,395.46 = 64,518.78 : x
  2. Step 2: Convert to fraction form
    115,505.22/159,395.46 = 64,518.78/x
  3. Step 3: Cross multiply
    115,505.22x = 159,395.46 × 64,518.78
  4. Step 4: Simplify right side
    115,505.22x = 10,284,000,616.74
  5. Step 5: Solve for x
    x = 10,284,000,616.74/115,505.22
  6. Step 6: Final answer
    x = 89,034.94

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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.