Home / 105,815.15-158,748.13-39,255.86

Finding the Fourth Proportional to 105,815.15, 158,748.13 and 39,255.86

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Solution

The fourth proportional to 105,815.15, 158,748.13 and 39,255.86 is: 58,893.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,815.15 : 158,748.13 = 39,255.86 : x
  2. Step 2: Convert to fraction form
    105,815.15/158,748.13 = 39,255.86/x
  3. Step 3: Cross multiply
    105,815.15x = 158,748.13 × 39,255.86
  4. Step 4: Simplify right side
    105,815.15x = 6,231,793,809.12
  5. Step 5: Solve for x
    x = 6,231,793,809.12/105,815.15
  6. Step 6: Final answer
    x = 58,893.21

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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.