Home / 140,901.12-194,443.20-77,239.20

Finding the Fourth Proportional to 140,901.12, 194,443.20 and 77,239.20

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Solution

The fourth proportional to 140,901.12, 194,443.20 and 77,239.20 is: 106,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,901.12 : 194,443.20 = 77,239.20 : x
  2. Step 2: Convert to fraction form
    140,901.12/194,443.20 = 77,239.20/x
  3. Step 3: Cross multiply
    140,901.12x = 194,443.20 × 77,239.20
  4. Step 4: Simplify right side
    140,901.12x = 15,018,637,213.44
  5. Step 5: Solve for x
    x = 15,018,637,213.44/140,901.12
  6. Step 6: Final answer
    x = 106,589.91

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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.