Home / 103,291.11-142,530.03-57,959.73

Finding the Fourth Proportional to 103,291.11, 142,530.03 and 57,959.73

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Solution

The fourth proportional to 103,291.11, 142,530.03 and 57,959.73 is: 79,977.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,291.11 : 142,530.03 = 57,959.73 : x
  2. Step 2: Convert to fraction form
    103,291.11/142,530.03 = 57,959.73/x
  3. Step 3: Cross multiply
    103,291.11x = 142,530.03 × 57,959.73
  4. Step 4: Simplify right side
    103,291.11x = 8,261,002,055.69
  5. Step 5: Solve for x
    x = 8,261,002,055.69/103,291.11
  6. Step 6: Final answer
    x = 79,977.86

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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.