Home / 141,860.79-195,767.85-78,199.65

Finding the Fourth Proportional to 141,860.79, 195,767.85 and 78,199.65

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Solution

The fourth proportional to 141,860.79, 195,767.85 and 78,199.65 is: 107,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,860.79 : 195,767.85 = 78,199.65 : x
  2. Step 2: Convert to fraction form
    141,860.79/195,767.85 = 78,199.65/x
  3. Step 3: Cross multiply
    141,860.79x = 195,767.85 × 78,199.65
  4. Step 4: Simplify right side
    141,860.79x = 15,308,977,351.25
  5. Step 5: Solve for x
    x = 15,308,977,351.25/141,860.79
  6. Step 6: Final answer
    x = 107,915.49

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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.