Home / 155,745.64-214,926.42-87,769.56

Finding the Fourth Proportional to 155,745.64, 214,926.42 and 87,769.56

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Solution

The fourth proportional to 155,745.64, 214,926.42 and 87,769.56 is: 121,120.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,745.64 : 214,926.42 = 87,769.56 : x
  2. Step 2: Convert to fraction form
    155,745.64/214,926.42 = 87,769.56/x
  3. Step 3: Cross multiply
    155,745.64x = 214,926.42 × 87,769.56
  4. Step 4: Simplify right side
    155,745.64x = 18,863,997,315.78
  5. Step 5: Solve for x
    x = 18,863,997,315.78/155,745.64
  6. Step 6: Final answer
    x = 121,120.55

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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.