Home / 121,190.38-181,443.80-64,135.05

Finding the Fourth Proportional to 121,190.38, 181,443.80 and 64,135.05

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Solution

The fourth proportional to 121,190.38, 181,443.80 and 64,135.05 is: 96,021.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,190.38 : 181,443.80 = 64,135.05 : x
  2. Step 2: Convert to fraction form
    121,190.38/181,443.80 = 64,135.05/x
  3. Step 3: Cross multiply
    121,190.38x = 181,443.80 × 64,135.05
  4. Step 4: Simplify right side
    121,190.38x = 11,636,908,196.05
  5. Step 5: Solve for x
    x = 11,636,908,196.05/121,190.38
  6. Step 6: Final answer
    x = 96,021.71

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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.