Home / 142,625.34-213,982.76-85,764.69

Finding the Fourth Proportional to 142,625.34, 213,982.76 and 85,764.69

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Solution

The fourth proportional to 142,625.34, 213,982.76 and 85,764.69 is: 128,673.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,625.34 : 213,982.76 = 85,764.69 : x
  2. Step 2: Convert to fraction form
    142,625.34/213,982.76 = 85,764.69/x
  3. Step 3: Cross multiply
    142,625.34x = 213,982.76 × 85,764.69
  4. Step 4: Simplify right side
    142,625.34x = 18,352,165,291.16
  5. Step 5: Solve for x
    x = 18,352,165,291.16/142,625.34
  6. Step 6: Final answer
    x = 128,673.95

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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.