Home / 141,989.31-195,945.80-78,326.19

Finding the Fourth Proportional to 141,989.31, 195,945.80 and 78,326.19

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Solution

The fourth proportional to 141,989.31, 195,945.80 and 78,326.19 is: 108,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,989.31 : 195,945.80 = 78,326.19 : x
  2. Step 2: Convert to fraction form
    141,989.31/195,945.80 = 78,326.19/x
  3. Step 3: Cross multiply
    141,989.31x = 195,945.80 × 78,326.19
  4. Step 4: Simplify right side
    141,989.31x = 15,347,687,568.87
  5. Step 5: Solve for x
    x = 15,347,687,568.87/141,989.31
  6. Step 6: Final answer
    x = 108,090.44

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1.5x scale

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.