Home / 142,142.28-213,223.68-40,936.20

Finding the Fourth Proportional to 142,142.28, 213,223.68 and 40,936.20

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Solution

The fourth proportional to 142,142.28, 213,223.68 and 40,936.20 is: 61,407.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,142.28 : 213,223.68 = 40,936.20 : x
  2. Step 2: Convert to fraction form
    142,142.28/213,223.68 = 40,936.20/x
  3. Step 3: Cross multiply
    142,142.28x = 213,223.68 × 40,936.20
  4. Step 4: Simplify right side
    142,142.28x = 8,728,567,209.22
  5. Step 5: Solve for x
    x = 8,728,567,209.22/142,142.28
  6. Step 6: Final answer
    x = 61,407.25

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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.