Home / 146,189.70-219,025.35-90,720.90

Finding the Fourth Proportional to 146,189.70, 219,025.35 and 90,720.90

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Solution

The fourth proportional to 146,189.70, 219,025.35 and 90,720.90 is: 135,920.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,189.70 : 219,025.35 = 90,720.90 : x
  2. Step 2: Convert to fraction form
    146,189.70/219,025.35 = 90,720.90/x
  3. Step 3: Cross multiply
    146,189.70x = 219,025.35 × 90,720.90
  4. Step 4: Simplify right side
    146,189.70x = 19,870,176,874.82
  5. Step 5: Solve for x
    x = 19,870,176,874.82/146,189.70
  6. Step 6: Final answer
    x = 135,920.50

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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.