Home / 141,839.86-195,740.37-78,180.10

Finding the Fourth Proportional to 141,839.86, 195,740.37 and 78,180.10

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Solution

The fourth proportional to 141,839.86, 195,740.37 and 78,180.10 is: 107,889.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,839.86 : 195,740.37 = 78,180.10 : x
  2. Step 2: Convert to fraction form
    141,839.86/195,740.37 = 78,180.10/x
  3. Step 3: Cross multiply
    141,839.86x = 195,740.37 × 78,180.10
  4. Step 4: Simplify right side
    141,839.86x = 15,303,001,700.64
  5. Step 5: Solve for x
    x = 15,303,001,700.64/141,839.86
  6. Step 6: Final answer
    x = 107,889.29

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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.