Home / 254,128.11-381,114.37-85,603.24

Finding the Fourth Proportional to 254,128.11, 381,114.37 and 85,603.24

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Solution

The fourth proportional to 254,128.11, 381,114.37 and 85,603.24 is: 128,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,128.11 : 381,114.37 = 85,603.24 : x
  2. Step 2: Convert to fraction form
    254,128.11/381,114.37 = 85,603.24/x
  3. Step 3: Cross multiply
    254,128.11x = 381,114.37 × 85,603.24
  4. Step 4: Simplify right side
    254,128.11x = 32,624,624,882.56
  5. Step 5: Solve for x
    x = 32,624,624,882.56/254,128.11
  6. Step 6: Final answer
    x = 128,378.65

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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.