Home / 111,439.36-153,786.09-63,719.02

Finding the Fourth Proportional to 111,439.36, 153,786.09 and 63,719.02

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Solution

The fourth proportional to 111,439.36, 153,786.09 and 63,719.02 is: 87,932.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,439.36 : 153,786.09 = 63,719.02 : x
  2. Step 2: Convert to fraction form
    111,439.36/153,786.09 = 63,719.02/x
  3. Step 3: Cross multiply
    111,439.36x = 153,786.09 × 63,719.02
  4. Step 4: Simplify right side
    111,439.36x = 9,799,098,944.43
  5. Step 5: Solve for x
    x = 9,799,098,944.43/111,439.36
  6. Step 6: Final answer
    x = 87,932.12

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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.