Home / 142,640.35-213,620.93-82,542.14

Finding the Fourth Proportional to 142,640.35, 213,620.93 and 82,542.14

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Solution

The fourth proportional to 142,640.35, 213,620.93 and 82,542.14 is: 123,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,640.35 : 213,620.93 = 82,542.14 : x
  2. Step 2: Convert to fraction form
    142,640.35/213,620.93 = 82,542.14/x
  3. Step 3: Cross multiply
    142,640.35x = 213,620.93 × 82,542.14
  4. Step 4: Simplify right side
    142,640.35x = 17,632,728,710.99
  5. Step 5: Solve for x
    x = 17,632,728,710.99/142,640.35
  6. Step 6: Final answer
    x = 123,616.70

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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.