Home / 143,140.52-197,542.89-82,722.20

Finding the Fourth Proportional to 143,140.52, 197,542.89 and 82,722.20

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Solution

The fourth proportional to 143,140.52, 197,542.89 and 82,722.20 is: 114,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,140.52 : 197,542.89 = 82,722.20 : x
  2. Step 2: Convert to fraction form
    143,140.52/197,542.89 = 82,722.20/x
  3. Step 3: Cross multiply
    143,140.52x = 197,542.89 × 82,722.20
  4. Step 4: Simplify right side
    143,140.52x = 16,341,182,455.16
  5. Step 5: Solve for x
    x = 16,341,182,455.16/143,140.52
  6. Step 6: Final answer
    x = 114,161.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.