Home / 141,969.32-195,918.10-78,308.12

Finding the Fourth Proportional to 141,969.32, 195,918.10 and 78,308.12

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Solution

The fourth proportional to 141,969.32, 195,918.10 and 78,308.12 is: 108,065.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,969.32 : 195,918.10 = 78,308.12 : x
  2. Step 2: Convert to fraction form
    141,969.32/195,918.10 = 78,308.12/x
  3. Step 3: Cross multiply
    141,969.32x = 195,918.10 × 78,308.12
  4. Step 4: Simplify right side
    141,969.32x = 15,341,978,084.97
  5. Step 5: Solve for x
    x = 15,341,978,084.97/141,969.32
  6. Step 6: Final answer
    x = 108,065.45

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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.