Home / 143,294.92-197,538.57-100,140.44

Finding the Fourth Proportional to 143,294.92, 197,538.57 and 100,140.44

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Solution

The fourth proportional to 143,294.92, 197,538.57 and 100,140.44 is: 138,048.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,294.92 : 197,538.57 = 100,140.44 : x
  2. Step 2: Convert to fraction form
    143,294.92/197,538.57 = 100,140.44/x
  3. Step 3: Cross multiply
    143,294.92x = 197,538.57 × 100,140.44
  4. Step 4: Simplify right side
    143,294.92x = 19,781,598,329.08
  5. Step 5: Solve for x
    x = 19,781,598,329.08/143,294.92
  6. Step 6: Final answer
    x = 138,048.15

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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.