Home / 90,253.56-135,256.14-76,857.24

Finding the Fourth Proportional to 90,253.56, 135,256.14 and 76,857.24

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Solution

The fourth proportional to 90,253.56, 135,256.14 and 76,857.24 is: 115,180.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,253.56 : 135,256.14 = 76,857.24 : x
  2. Step 2: Convert to fraction form
    90,253.56/135,256.14 = 76,857.24/x
  3. Step 3: Cross multiply
    90,253.56x = 135,256.14 × 76,857.24
  4. Step 4: Simplify right side
    90,253.56x = 10,395,413,613.45
  5. Step 5: Solve for x
    x = 10,395,413,613.45/90,253.56
  6. Step 6: Final answer
    x = 115,180.09

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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.