Home / 142,919.10-214,225.05-54,138.30

Finding the Fourth Proportional to 142,919.10, 214,225.05 and 54,138.30

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Solution

The fourth proportional to 142,919.10, 214,225.05 and 54,138.30 is: 81,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,919.10 : 214,225.05 = 54,138.30 : x
  2. Step 2: Convert to fraction form
    142,919.10/214,225.05 = 54,138.30/x
  3. Step 3: Cross multiply
    142,919.10x = 214,225.05 × 54,138.30
  4. Step 4: Simplify right side
    142,919.10x = 11,597,780,024.42
  5. Step 5: Solve for x
    x = 11,597,780,024.42/142,919.10
  6. Step 6: Final answer
    x = 81,149.27

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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.