Home / 140,784.21-194,282.28-77,122.26

Finding the Fourth Proportional to 140,784.21, 194,282.28 and 77,122.26

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Solution

The fourth proportional to 140,784.21, 194,282.28 and 77,122.26 is: 106,428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,784.21 : 194,282.28 = 77,122.26 : x
  2. Step 2: Convert to fraction form
    140,784.21/194,282.28 = 77,122.26/x
  3. Step 3: Cross multiply
    140,784.21x = 194,282.28 × 77,122.26
  4. Step 4: Simplify right side
    140,784.21x = 14,983,488,511.55
  5. Step 5: Solve for x
    x = 14,983,488,511.55/140,784.21
  6. Step 6: Final answer
    x = 106,428.76

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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.