Home / 141,820.57-195,713.45-78,160.51

Finding the Fourth Proportional to 141,820.57, 195,713.45 and 78,160.51

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Solution

The fourth proportional to 141,820.57, 195,713.45 and 78,160.51 is: 107,862.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,820.57 : 195,713.45 = 78,160.51 : x
  2. Step 2: Convert to fraction form
    141,820.57/195,713.45 = 78,160.51/x
  3. Step 3: Cross multiply
    141,820.57x = 195,713.45 × 78,160.51
  4. Step 4: Simplify right side
    141,820.57x = 15,297,063,065.86
  5. Step 5: Solve for x
    x = 15,297,063,065.86/141,820.57
  6. Step 6: Final answer
    x = 107,862.09

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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.