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Finding the Fourth Proportional to 105,767.60, 158,910.60 and 79,523.60

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Solution

The fourth proportional to 105,767.60, 158,910.60 and 79,523.60 is: 119,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,767.60 : 158,910.60 = 79,523.60 : x
  2. Step 2: Convert to fraction form
    105,767.60/158,910.60 = 79,523.60/x
  3. Step 3: Cross multiply
    105,767.60x = 158,910.60 × 79,523.60
  4. Step 4: Simplify right side
    105,767.60x = 12,637,142,990.16
  5. Step 5: Solve for x
    x = 12,637,142,990.16/105,767.60
  6. Step 6: Final answer
    x = 119,480.28

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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.