Home / 141,428.52-195,164.10-77,764.68

Finding the Fourth Proportional to 141,428.52, 195,164.10 and 77,764.68

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Solution

The fourth proportional to 141,428.52, 195,164.10 and 77,764.68 is: 107,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,428.52 : 195,164.10 = 77,764.68 : x
  2. Step 2: Convert to fraction form
    141,428.52/195,164.10 = 77,764.68/x
  3. Step 3: Cross multiply
    141,428.52x = 195,164.10 × 77,764.68
  4. Step 4: Simplify right side
    141,428.52x = 15,176,873,783.99
  5. Step 5: Solve for x
    x = 15,176,873,783.99/141,428.52
  6. Step 6: Final answer
    x = 107,311.27

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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.