Home / 91,721.16-137,620.74-50,119.56

Finding the Fourth Proportional to 91,721.16, 137,620.74 and 50,119.56

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Solution

The fourth proportional to 91,721.16, 137,620.74 and 50,119.56 is: 75,200.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,721.16 : 137,620.74 = 50,119.56 : x
  2. Step 2: Convert to fraction form
    91,721.16/137,620.74 = 50,119.56/x
  3. Step 3: Cross multiply
    91,721.16x = 137,620.74 × 50,119.56
  4. Step 4: Simplify right side
    91,721.16x = 6,897,490,935.67
  5. Step 5: Solve for x
    x = 6,897,490,935.67/91,721.16
  6. Step 6: Final answer
    x = 75,200.65

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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.