Home / 141,872.13-195,784.16-78,208.56

Finding the Fourth Proportional to 141,872.13, 195,784.16 and 78,208.56

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Solution

The fourth proportional to 141,872.13, 195,784.16 and 78,208.56 is: 107,928.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,872.13 : 195,784.16 = 78,208.56 : x
  2. Step 2: Convert to fraction form
    141,872.13/195,784.16 = 78,208.56/x
  3. Step 3: Cross multiply
    141,872.13x = 195,784.16 × 78,208.56
  4. Step 4: Simplify right side
    141,872.13x = 15,311,996,833.37
  5. Step 5: Solve for x
    x = 15,311,996,833.37/141,872.13
  6. Step 6: Final answer
    x = 107,928.15

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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.