Home / 143,289.40-214,934.10-137,222.20

Finding the Fourth Proportional to 143,289.40, 214,934.10 and 137,222.20

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Solution

The fourth proportional to 143,289.40, 214,934.10 and 137,222.20 is: 205,833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,289.40 : 214,934.10 = 137,222.20 : x
  2. Step 2: Convert to fraction form
    143,289.40/214,934.10 = 137,222.20/x
  3. Step 3: Cross multiply
    143,289.40x = 214,934.10 × 137,222.20
  4. Step 4: Simplify right side
    143,289.40x = 29,493,730,057.02
  5. Step 5: Solve for x
    x = 29,493,730,057.02/143,289.40
  6. Step 6: Final answer
    x = 205,833.30

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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.