Home / 121,051.94-181,578.78-42,165.90

Finding the Fourth Proportional to 121,051.94, 181,578.78 and 42,165.90

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Solution

The fourth proportional to 121,051.94, 181,578.78 and 42,165.90 is: 63,249.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,051.94 : 181,578.78 = 42,165.90 : x
  2. Step 2: Convert to fraction form
    121,051.94/181,578.78 = 42,165.90/x
  3. Step 3: Cross multiply
    121,051.94x = 181,578.78 × 42,165.90
  4. Step 4: Simplify right side
    121,051.94x = 7,656,432,679.60
  5. Step 5: Solve for x
    x = 7,656,432,679.60/121,051.94
  6. Step 6: Final answer
    x = 63,249.16

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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.