Home / 103,137.99-142,327.85-57,197.36

Finding the Fourth Proportional to 103,137.99, 142,327.85 and 57,197.36

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Solution

The fourth proportional to 103,137.99, 142,327.85 and 57,197.36 is: 78,930.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,137.99 : 142,327.85 = 57,197.36 : x
  2. Step 2: Convert to fraction form
    103,137.99/142,327.85 = 57,197.36/x
  3. Step 3: Cross multiply
    103,137.99x = 142,327.85 × 57,197.36
  4. Step 4: Simplify right side
    103,137.99x = 8,140,777,274.48
  5. Step 5: Solve for x
    x = 8,140,777,274.48/103,137.99
  6. Step 6: Final answer
    x = 78,930.93

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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.