Home / 142,004.22-213,047.28-45,939.30

Finding the Fourth Proportional to 142,004.22, 213,047.28 and 45,939.30

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Solution

The fourth proportional to 142,004.22, 213,047.28 and 45,939.30 is: 68,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,004.22 : 213,047.28 = 45,939.30 : x
  2. Step 2: Convert to fraction form
    142,004.22/213,047.28 = 45,939.30/x
  3. Step 3: Cross multiply
    142,004.22x = 213,047.28 × 45,939.30
  4. Step 4: Simplify right side
    142,004.22x = 9,787,242,910.10
  5. Step 5: Solve for x
    x = 9,787,242,910.10/142,004.22
  6. Step 6: Final answer
    x = 68,922.20

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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.