Home / 120,901.19-181,115.32-99,584.51

Finding the Fourth Proportional to 120,901.19, 181,115.32 and 99,584.51

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Solution

The fourth proportional to 120,901.19, 181,115.32 and 99,584.51 is: 149,181.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,901.19 : 181,115.32 = 99,584.51 : x
  2. Step 2: Convert to fraction form
    120,901.19/181,115.32 = 99,584.51/x
  3. Step 3: Cross multiply
    120,901.19x = 181,115.32 × 99,584.51
  4. Step 4: Simplify right side
    120,901.19x = 18,036,280,167.39
  5. Step 5: Solve for x
    x = 18,036,280,167.39/120,901.19
  6. Step 6: Final answer
    x = 149,181.99

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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.