Home / 107,805.72-161,725.86-45,485.40

Finding the Fourth Proportional to 107,805.72, 161,725.86 and 45,485.40

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Solution

The fourth proportional to 107,805.72, 161,725.86 and 45,485.40 is: 68,235.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,805.72 : 161,725.86 = 45,485.40 : x
  2. Step 2: Convert to fraction form
    107,805.72/161,725.86 = 45,485.40/x
  3. Step 3: Cross multiply
    107,805.72x = 161,725.86 × 45,485.40
  4. Step 4: Simplify right side
    107,805.72x = 7,356,165,432.44
  5. Step 5: Solve for x
    x = 7,356,165,432.44/107,805.72
  6. Step 6: Final answer
    x = 68,235.39

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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.