Home / 75,180.36-112,608.12-70,763.78

Finding the Fourth Proportional to 75,180.36, 112,608.12 and 70,763.78

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Solution

The fourth proportional to 75,180.36, 112,608.12 and 70,763.78 is: 105,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,180.36 : 112,608.12 = 70,763.78 : x
  2. Step 2: Convert to fraction form
    75,180.36/112,608.12 = 70,763.78/x
  3. Step 3: Cross multiply
    75,180.36x = 112,608.12 × 70,763.78
  4. Step 4: Simplify right side
    75,180.36x = 7,968,576,229.89
  5. Step 5: Solve for x
    x = 7,968,576,229.89/75,180.36
  6. Step 6: Final answer
    x = 105,992.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.