Home / 141,868.94-195,780.65-78,209.01

Finding the Fourth Proportional to 141,868.94, 195,780.65 and 78,209.01

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Solution

The fourth proportional to 141,868.94, 195,780.65 and 78,209.01 is: 107,929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,868.94 : 195,780.65 = 78,209.01 : x
  2. Step 2: Convert to fraction form
    141,868.94/195,780.65 = 78,209.01/x
  3. Step 3: Cross multiply
    141,868.94x = 195,780.65 × 78,209.01
  4. Step 4: Simplify right side
    141,868.94x = 15,311,810,422.61
  5. Step 5: Solve for x
    x = 15,311,810,422.61/141,868.94
  6. Step 6: Final answer
    x = 107,929.27

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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.