Home / 105,942.60-159,173.10-79,698.60

Finding the Fourth Proportional to 105,942.60, 159,173.10 and 79,698.60

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Solution

The fourth proportional to 105,942.60, 159,173.10 and 79,698.60 is: 119,742.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,942.60 : 159,173.10 = 79,698.60 : x
  2. Step 2: Convert to fraction form
    105,942.60/159,173.10 = 79,698.60/x
  3. Step 3: Cross multiply
    105,942.60x = 159,173.10 × 79,698.60
  4. Step 4: Simplify right side
    105,942.60x = 12,685,873,227.66
  5. Step 5: Solve for x
    x = 12,685,873,227.66/105,942.60
  6. Step 6: Final answer
    x = 119,742.89

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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.