Home / 104,138.48-143,710.38-56,390.73

Finding the Fourth Proportional to 104,138.48, 143,710.38 and 56,390.73

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Solution

The fourth proportional to 104,138.48, 143,710.38 and 56,390.73 is: 77,818.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,138.48 : 143,710.38 = 56,390.73 : x
  2. Step 2: Convert to fraction form
    104,138.48/143,710.38 = 56,390.73/x
  3. Step 3: Cross multiply
    104,138.48x = 143,710.38 × 56,390.73
  4. Step 4: Simplify right side
    104,138.48x = 8,103,933,236.78
  5. Step 5: Solve for x
    x = 8,103,933,236.78/104,138.48
  6. Step 6: Final answer
    x = 77,818.82

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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.