Home / 143,727.27-196,907.31-138,340.19

Finding the Fourth Proportional to 143,727.27, 196,907.31 and 138,340.19

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Solution

The fourth proportional to 143,727.27, 196,907.31 and 138,340.19 is: 189,526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,727.27 : 196,907.31 = 138,340.19 : x
  2. Step 2: Convert to fraction form
    143,727.27/196,907.31 = 138,340.19/x
  3. Step 3: Cross multiply
    143,727.27x = 196,907.31 × 138,340.19
  4. Step 4: Simplify right side
    143,727.27x = 27,240,194,677.79
  5. Step 5: Solve for x
    x = 27,240,194,677.79/143,727.27
  6. Step 6: Final answer
    x = 189,526.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.