Home / 101,309.93-151,829.05-78,847.73

Finding the Fourth Proportional to 101,309.93, 151,829.05 and 78,847.73

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Solution

The fourth proportional to 101,309.93, 151,829.05 and 78,847.73 is: 118,165.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,309.93 : 151,829.05 = 78,847.73 : x
  2. Step 2: Convert to fraction form
    101,309.93/151,829.05 = 78,847.73/x
  3. Step 3: Cross multiply
    101,309.93x = 151,829.05 × 78,847.73
  4. Step 4: Simplify right side
    101,309.93x = 11,971,374,984.29
  5. Step 5: Solve for x
    x = 11,971,374,984.29/101,309.93
  6. Step 6: Final answer
    x = 118,165.86

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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.