Home / 143,109.09-197,581.28-92,140.65

Finding the Fourth Proportional to 143,109.09, 197,581.28 and 92,140.65

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Solution

The fourth proportional to 143,109.09, 197,581.28 and 92,140.65 is: 127,212.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,109.09 : 197,581.28 = 92,140.65 : x
  2. Step 2: Convert to fraction form
    143,109.09/197,581.28 = 92,140.65/x
  3. Step 3: Cross multiply
    143,109.09x = 197,581.28 × 92,140.65
  4. Step 4: Simplify right side
    143,109.09x = 18,205,267,106.33
  5. Step 5: Solve for x
    x = 18,205,267,106.33/143,109.09
  6. Step 6: Final answer
    x = 127,212.51

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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.