Home / 107,764.12-148,782.56-79,420.44

Finding the Fourth Proportional to 107,764.12, 148,782.56 and 79,420.44

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Solution

The fourth proportional to 107,764.12, 148,782.56 and 79,420.44 is: 109,650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,764.12 : 148,782.56 = 79,420.44 : x
  2. Step 2: Convert to fraction form
    107,764.12/148,782.56 = 79,420.44/x
  3. Step 3: Cross multiply
    107,764.12x = 148,782.56 × 79,420.44
  4. Step 4: Simplify right side
    107,764.12x = 11,816,376,379.53
  5. Step 5: Solve for x
    x = 11,816,376,379.53/107,764.12
  6. Step 6: Final answer
    x = 109,650.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.