Home / 103,986.07-143,500.78-56,239.40

Finding the Fourth Proportional to 103,986.07, 143,500.78 and 56,239.40

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Solution

The fourth proportional to 103,986.07, 143,500.78 and 56,239.40 is: 77,610.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,986.07 : 143,500.78 = 56,239.40 : x
  2. Step 2: Convert to fraction form
    103,986.07/143,500.78 = 56,239.40/x
  3. Step 3: Cross multiply
    103,986.07x = 143,500.78 × 56,239.40
  4. Step 4: Simplify right side
    103,986.07x = 8,070,397,766.73
  5. Step 5: Solve for x
    x = 8,070,397,766.73/103,986.07
  6. Step 6: Final answer
    x = 77,610.37

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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.