Home / 120,856.86-181,131.93-68,295.78

Finding the Fourth Proportional to 120,856.86, 181,131.93 and 68,295.78

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Solution

The fourth proportional to 120,856.86, 181,131.93 and 68,295.78 is: 102,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,856.86 : 181,131.93 = 68,295.78 : x
  2. Step 2: Convert to fraction form
    120,856.86/181,131.93 = 68,295.78/x
  3. Step 3: Cross multiply
    120,856.86x = 181,131.93 × 68,295.78
  4. Step 4: Simplify right side
    120,856.86x = 12,370,546,442.26
  5. Step 5: Solve for x
    x = 12,370,546,442.26/120,856.86
  6. Step 6: Final answer
    x = 102,357.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.