Home / 117,128.81-175,716.30-38,221.85

Finding the Fourth Proportional to 117,128.81, 175,716.30 and 38,221.85

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Solution

The fourth proportional to 117,128.81, 175,716.30 and 38,221.85 is: 57,340.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.81 : 175,716.30 = 38,221.85 : x
  2. Step 2: Convert to fraction form
    117,128.81/175,716.30 = 38,221.85/x
  3. Step 3: Cross multiply
    117,128.81x = 175,716.30 × 38,221.85
  4. Step 4: Simplify right side
    117,128.81x = 6,716,202,061.16
  5. Step 5: Solve for x
    x = 6,716,202,061.16/117,128.81
  6. Step 6: Final answer
    x = 57,340.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.