Home / 203,705.10-305,436.15-124,875.90

Finding the Fourth Proportional to 203,705.10, 305,436.15 and 124,875.90

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Solution

The fourth proportional to 203,705.10, 305,436.15 and 124,875.90 is: 187,239.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,705.10 : 305,436.15 = 124,875.90 : x
  2. Step 2: Convert to fraction form
    203,705.10/305,436.15 = 124,875.90/x
  3. Step 3: Cross multiply
    203,705.10x = 305,436.15 × 124,875.90
  4. Step 4: Simplify right side
    203,705.10x = 38,141,614,123.79
  5. Step 5: Solve for x
    x = 38,141,614,123.79/203,705.10
  6. Step 6: Final answer
    x = 187,239.37

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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.