Home / 143,112.24-197,426.28-100,694.16

Finding the Fourth Proportional to 143,112.24, 197,426.28 and 100,694.16

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Solution

The fourth proportional to 143,112.24, 197,426.28 and 100,694.16 is: 138,909.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,112.24 : 197,426.28 = 100,694.16 : x
  2. Step 2: Convert to fraction form
    143,112.24/197,426.28 = 100,694.16/x
  3. Step 3: Cross multiply
    143,112.24x = 197,426.28 × 100,694.16
  4. Step 4: Simplify right side
    143,112.24x = 19,879,673,426.52
  5. Step 5: Solve for x
    x = 19,879,673,426.52/143,112.24
  6. Step 6: Final answer
    x = 138,909.67

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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.