Home / 103,909.43-155,815.70-53,976.13

Finding the Fourth Proportional to 103,909.43, 155,815.70 and 53,976.13

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Solution

The fourth proportional to 103,909.43, 155,815.70 and 53,976.13 is: 80,939.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,909.43 : 155,815.70 = 53,976.13 : x
  2. Step 2: Convert to fraction form
    103,909.43/155,815.70 = 53,976.13/x
  3. Step 3: Cross multiply
    103,909.43x = 155,815.70 × 53,976.13
  4. Step 4: Simplify right side
    103,909.43x = 8,410,327,835.10
  5. Step 5: Solve for x
    x = 8,410,327,835.10/103,909.43
  6. Step 6: Final answer
    x = 80,939.02

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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.