Home / 95,811.08-143,790.40-77,136.80

Finding the Fourth Proportional to 95,811.08, 143,790.40 and 77,136.80

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Solution

The fourth proportional to 95,811.08, 143,790.40 and 77,136.80 is: 115,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,811.08 : 143,790.40 = 77,136.80 : x
  2. Step 2: Convert to fraction form
    95,811.08/143,790.40 = 77,136.80/x
  3. Step 3: Cross multiply
    95,811.08x = 143,790.40 × 77,136.80
  4. Step 4: Simplify right side
    95,811.08x = 11,091,531,326.72
  5. Step 5: Solve for x
    x = 11,091,531,326.72/95,811.08
  6. Step 6: Final answer
    x = 115,764.60

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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.