Home / 121,010.10-181,169.55-74,354.10

Finding the Fourth Proportional to 121,010.10, 181,169.55 and 74,354.10

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Solution

The fourth proportional to 121,010.10, 181,169.55 and 74,354.10 is: 111,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.10 : 181,169.55 = 74,354.10 : x
  2. Step 2: Convert to fraction form
    121,010.10/181,169.55 = 74,354.10/x
  3. Step 3: Cross multiply
    121,010.10x = 181,169.55 × 74,354.10
  4. Step 4: Simplify right side
    121,010.10x = 13,470,698,837.66
  5. Step 5: Solve for x
    x = 13,470,698,837.66/121,010.10
  6. Step 6: Final answer
    x = 111,318.80

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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.