Home / 115,120.48-158,867.84-64,131.80

Finding the Fourth Proportional to 115,120.48, 158,867.84 and 64,131.80

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Solution

The fourth proportional to 115,120.48, 158,867.84 and 64,131.80 is: 88,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,120.48 : 158,867.84 = 64,131.80 : x
  2. Step 2: Convert to fraction form
    115,120.48/158,867.84 = 64,131.80/x
  3. Step 3: Cross multiply
    115,120.48x = 158,867.84 × 64,131.80
  4. Step 4: Simplify right side
    115,120.48x = 10,188,480,541.31
  5. Step 5: Solve for x
    x = 10,188,480,541.31/115,120.48
  6. Step 6: Final answer
    x = 88,502.76

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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.