Home / 140,721.76-194,185.92-77,049.28

Finding the Fourth Proportional to 140,721.76, 194,185.92 and 77,049.28

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Solution

The fourth proportional to 140,721.76, 194,185.92 and 77,049.28 is: 106,322.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,721.76 : 194,185.92 = 77,049.28 : x
  2. Step 2: Convert to fraction form
    140,721.76/194,185.92 = 77,049.28/x
  3. Step 3: Cross multiply
    140,721.76x = 194,185.92 × 77,049.28
  4. Step 4: Simplify right side
    140,721.76x = 14,961,885,322.14
  5. Step 5: Solve for x
    x = 14,961,885,322.14/140,721.76
  6. Step 6: Final answer
    x = 106,322.47

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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.