Home / 138,805.46-191,551.59-75,143.25

Finding the Fourth Proportional to 138,805.46, 191,551.59 and 75,143.25

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Solution

The fourth proportional to 138,805.46, 191,551.59 and 75,143.25 is: 103,697.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,805.46 : 191,551.59 = 75,143.25 : x
  2. Step 2: Convert to fraction form
    138,805.46/191,551.59 = 75,143.25/x
  3. Step 3: Cross multiply
    138,805.46x = 191,551.59 × 75,143.25
  4. Step 4: Simplify right side
    138,805.46x = 14,393,809,015.27
  5. Step 5: Solve for x
    x = 14,393,809,015.27/138,805.46
  6. Step 6: Final answer
    x = 103,697.71

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1.5x scale

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.