Home / 103,986.41-143,501.25-56,239.76

Finding the Fourth Proportional to 103,986.41, 143,501.25 and 56,239.76

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Solution

The fourth proportional to 103,986.41, 143,501.25 and 56,239.76 is: 77,610.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,986.41 : 143,501.25 = 56,239.76 : x
  2. Step 2: Convert to fraction form
    103,986.41/143,501.25 = 56,239.76/x
  3. Step 3: Cross multiply
    103,986.41x = 143,501.25 × 56,239.76
  4. Step 4: Simplify right side
    103,986.41x = 8,070,474,860.99
  5. Step 5: Solve for x
    x = 8,070,474,860.99/103,986.41
  6. Step 6: Final answer
    x = 77,610.86

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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.