Home / 141,537.20-195,324.48-77,878.40

Finding the Fourth Proportional to 141,537.20, 195,324.48 and 77,878.40

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Solution

The fourth proportional to 141,537.20, 195,324.48 and 77,878.40 is: 107,473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,537.20 : 195,324.48 = 77,878.40 : x
  2. Step 2: Convert to fraction form
    141,537.20/195,324.48 = 77,878.40/x
  3. Step 3: Cross multiply
    141,537.20x = 195,324.48 × 77,878.40
  4. Step 4: Simplify right side
    141,537.20x = 15,211,557,983.23
  5. Step 5: Solve for x
    x = 15,211,557,983.23/141,537.20
  6. Step 6: Final answer
    x = 107,473.92

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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.