Home / 141,820.10-195,711.73-78,157.89

Finding the Fourth Proportional to 141,820.10, 195,711.73 and 78,157.89

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Solution

The fourth proportional to 141,820.10, 195,711.73 and 78,157.89 is: 107,857.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,820.10 : 195,711.73 = 78,157.89 : x
  2. Step 2: Convert to fraction form
    141,820.10/195,711.73 = 78,157.89/x
  3. Step 3: Cross multiply
    141,820.10x = 195,711.73 × 78,157.89
  4. Step 4: Simplify right side
    141,820.10x = 15,296,415,474.26
  5. Step 5: Solve for x
    x = 15,296,415,474.26/141,820.10
  6. Step 6: Final answer
    x = 107,857.88

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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.