Home / 143,321.81-214,982.40-38,140.77

Finding the Fourth Proportional to 143,321.81, 214,982.40 and 38,140.77

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Solution

The fourth proportional to 143,321.81, 214,982.40 and 38,140.77 is: 57,211.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,321.81 : 214,982.40 = 38,140.77 : x
  2. Step 2: Convert to fraction form
    143,321.81/214,982.40 = 38,140.77/x
  3. Step 3: Cross multiply
    143,321.81x = 214,982.40 × 38,140.77
  4. Step 4: Simplify right side
    143,321.81x = 8,199,595,221.66
  5. Step 5: Solve for x
    x = 8,199,595,221.66/143,321.81
  6. Step 6: Final answer
    x = 57,211.08

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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.