Home / 138,747.57-191,471.63-75,085.37

Finding the Fourth Proportional to 138,747.57, 191,471.63 and 75,085.37

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Solution

The fourth proportional to 138,747.57, 191,471.63 and 75,085.37 is: 103,617.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,747.57 : 191,471.63 = 75,085.37 : x
  2. Step 2: Convert to fraction form
    138,747.57/191,471.63 = 75,085.37/x
  3. Step 3: Cross multiply
    138,747.57x = 191,471.63 × 75,085.37
  4. Step 4: Simplify right side
    138,747.57x = 14,376,716,850.27
  5. Step 5: Solve for x
    x = 14,376,716,850.27/138,747.57
  6. Step 6: Final answer
    x = 103,617.79

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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.