Home / 140,788.28-194,288.51-77,126.09

Finding the Fourth Proportional to 140,788.28, 194,288.51 and 77,126.09

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Solution

The fourth proportional to 140,788.28, 194,288.51 and 77,126.09 is: 106,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,788.28 : 194,288.51 = 77,126.09 : x
  2. Step 2: Convert to fraction form
    140,788.28/194,288.51 = 77,126.09/x
  3. Step 3: Cross multiply
    140,788.28x = 194,288.51 × 77,126.09
  4. Step 4: Simplify right side
    140,788.28x = 14,984,712,329.60
  5. Step 5: Solve for x
    x = 14,984,712,329.60/140,788.28
  6. Step 6: Final answer
    x = 106,434.37

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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.