Home / 111,717.10-154,167.87-61,415.02

Finding the Fourth Proportional to 111,717.10, 154,167.87 and 61,415.02

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Solution

The fourth proportional to 111,717.10, 154,167.87 and 61,415.02 is: 84,751.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,717.10 : 154,167.87 = 61,415.02 : x
  2. Step 2: Convert to fraction form
    111,717.10/154,167.87 = 61,415.02/x
  3. Step 3: Cross multiply
    111,717.10x = 154,167.87 × 61,415.02
  4. Step 4: Simplify right side
    111,717.10x = 9,468,222,819.41
  5. Step 5: Solve for x
    x = 9,468,222,819.41/111,717.10
  6. Step 6: Final answer
    x = 84,751.78

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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.