Home / 79,917.93-120,012.98-76,574.25

Finding the Fourth Proportional to 79,917.93, 120,012.98 and 76,574.25

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Solution

The fourth proportional to 79,917.93, 120,012.98 and 76,574.25 is: 114,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,917.93 : 120,012.98 = 76,574.25 : x
  2. Step 2: Convert to fraction form
    79,917.93/120,012.98 = 76,574.25/x
  3. Step 3: Cross multiply
    79,917.93x = 120,012.98 × 76,574.25
  4. Step 4: Simplify right side
    79,917.93x = 9,189,903,933.77
  5. Step 5: Solve for x
    x = 9,189,903,933.77/79,917.93
  6. Step 6: Final answer
    x = 114,991.77

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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.