Home / 115,058.28-158,719.54-79,186.02

Finding the Fourth Proportional to 115,058.28, 158,719.54 and 79,186.02

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Solution

The fourth proportional to 115,058.28, 158,719.54 and 79,186.02 is: 109,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,058.28 : 158,719.54 = 79,186.02 : x
  2. Step 2: Convert to fraction form
    115,058.28/158,719.54 = 79,186.02/x
  3. Step 3: Cross multiply
    115,058.28x = 158,719.54 × 79,186.02
  4. Step 4: Simplify right side
    115,058.28x = 12,568,368,668.83
  5. Step 5: Solve for x
    x = 12,568,368,668.83/115,058.28
  6. Step 6: Final answer
    x = 109,234.80

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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.