Home / 111,879.12-154,389.96-61,577.04

Finding the Fourth Proportional to 111,879.12, 154,389.96 and 61,577.04

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Solution

The fourth proportional to 111,879.12, 154,389.96 and 61,577.04 is: 84,974.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,879.12 : 154,389.96 = 61,577.04 : x
  2. Step 2: Convert to fraction form
    111,879.12/154,389.96 = 61,577.04/x
  3. Step 3: Cross multiply
    111,879.12x = 154,389.96 × 61,577.04
  4. Step 4: Simplify right side
    111,879.12x = 9,506,876,742.52
  5. Step 5: Solve for x
    x = 9,506,876,742.52/111,879.12
  6. Step 6: Final answer
    x = 84,974.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.