Home / 141,642.88-195,465.60-77,979.36

Finding the Fourth Proportional to 141,642.88, 195,465.60 and 77,979.36

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Solution

The fourth proportional to 141,642.88, 195,465.60 and 77,979.36 is: 107,610.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,642.88 : 195,465.60 = 77,979.36 : x
  2. Step 2: Convert to fraction form
    141,642.88/195,465.60 = 77,979.36/x
  3. Step 3: Cross multiply
    141,642.88x = 195,465.60 × 77,979.36
  4. Step 4: Simplify right side
    141,642.88x = 15,242,282,390.02
  5. Step 5: Solve for x
    x = 15,242,282,390.02/141,642.88
  6. Step 6: Final answer
    x = 107,610.65

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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.