Home / 143,155.20-214,905.60-142,118.40

Finding the Fourth Proportional to 143,155.20, 214,905.60 and 142,118.40

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Solution

The fourth proportional to 143,155.20, 214,905.60 and 142,118.40 is: 213,349.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,155.20 : 214,905.60 = 142,118.40 : x
  2. Step 2: Convert to fraction form
    143,155.20/214,905.60 = 142,118.40/x
  3. Step 3: Cross multiply
    143,155.20x = 214,905.60 × 142,118.40
  4. Step 4: Simplify right side
    143,155.20x = 30,542,040,023.04
  5. Step 5: Solve for x
    x = 30,542,040,023.04/143,155.20
  6. Step 6: Final answer
    x = 213,349.15

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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.