Home / 111,923.13-154,585.13-74,131.77

Finding the Fourth Proportional to 111,923.13, 154,585.13 and 74,131.77

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Solution

The fourth proportional to 111,923.13, 154,585.13 and 74,131.77 is: 102,388.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,923.13 : 154,585.13 = 74,131.77 : x
  2. Step 2: Convert to fraction form
    111,923.13/154,585.13 = 74,131.77/x
  3. Step 3: Cross multiply
    111,923.13x = 154,585.13 × 74,131.77
  4. Step 4: Simplify right side
    111,923.13x = 11,459,669,302.58
  5. Step 5: Solve for x
    x = 11,459,669,302.58/111,923.13
  6. Step 6: Final answer
    x = 102,388.75

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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.