Home / 143,157.33-214,574.00-72,888.21

Finding the Fourth Proportional to 143,157.33, 214,574.00 and 72,888.21

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Solution

The fourth proportional to 143,157.33, 214,574.00 and 72,888.21 is: 109,249.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,157.33 : 214,574.00 = 72,888.21 : x
  2. Step 2: Convert to fraction form
    143,157.33/214,574.00 = 72,888.21/x
  3. Step 3: Cross multiply
    143,157.33x = 214,574.00 × 72,888.21
  4. Step 4: Simplify right side
    143,157.33x = 15,639,914,408.10
  5. Step 5: Solve for x
    x = 15,639,914,408.10/143,157.33
  6. Step 6: Final answer
    x = 109,249.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.