Home / 137,778.20-206,667.30-136,903.40

Finding the Fourth Proportional to 137,778.20, 206,667.30 and 136,903.40

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Solution

The fourth proportional to 137,778.20, 206,667.30 and 136,903.40 is: 205,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,778.20 : 206,667.30 = 136,903.40 : x
  2. Step 2: Convert to fraction form
    137,778.20/206,667.30 = 136,903.40/x
  3. Step 3: Cross multiply
    137,778.20x = 206,667.30 × 136,903.40
  4. Step 4: Simplify right side
    137,778.20x = 28,293,456,038.82
  5. Step 5: Solve for x
    x = 28,293,456,038.82/137,778.20
  6. Step 6: Final answer
    x = 205,355.10

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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.