Home / 142,321.62-213,187.17-82,977.30

Finding the Fourth Proportional to 142,321.62, 213,187.17 and 82,977.30

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Solution

The fourth proportional to 142,321.62, 213,187.17 and 82,977.30 is: 124,293.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,321.62 : 213,187.17 = 82,977.30 : x
  2. Step 2: Convert to fraction form
    142,321.62/213,187.17 = 82,977.30/x
  3. Step 3: Cross multiply
    142,321.62x = 213,187.17 × 82,977.30
  4. Step 4: Simplify right side
    142,321.62x = 17,689,695,761.24
  5. Step 5: Solve for x
    x = 17,689,695,761.24/142,321.62
  6. Step 6: Final answer
    x = 124,293.81

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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.