Home / 107,352.46-148,285.83-81,703

Finding the Fourth Proportional to 107,352.46, 148,285.83 and 81,703

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Solution

The fourth proportional to 107,352.46, 148,285.83 and 81,703 is: 112,856.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,352.46 : 148,285.83 = 81,703 : x
  2. Step 2: Convert to fraction form
    107,352.46/148,285.83 = 81,703/x
  3. Step 3: Cross multiply
    107,352.46x = 148,285.83 × 81,703
  4. Step 4: Simplify right side
    107,352.46x = 12,115,397,168.49
  5. Step 5: Solve for x
    x = 12,115,397,168.49/107,352.46
  6. Step 6: Final answer
    x = 112,856.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.