Home / 120,721.94-181,260.64-67,518.16

Finding the Fourth Proportional to 120,721.94, 181,260.64 and 67,518.16

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Solution

The fourth proportional to 120,721.94, 181,260.64 and 67,518.16 is: 101,376.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,721.94 : 181,260.64 = 67,518.16 : x
  2. Step 2: Convert to fraction form
    120,721.94/181,260.64 = 67,518.16/x
  3. Step 3: Cross multiply
    120,721.94x = 181,260.64 × 67,518.16
  4. Step 4: Simplify right side
    120,721.94x = 12,238,384,144.68
  5. Step 5: Solve for x
    x = 12,238,384,144.68/120,721.94
  6. Step 6: Final answer
    x = 101,376.63

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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.