Home / 112,020.64-154,589.52-61,720.48

Finding the Fourth Proportional to 112,020.64, 154,589.52 and 61,720.48

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Solution

The fourth proportional to 112,020.64, 154,589.52 and 61,720.48 is: 85,174.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,020.64 : 154,589.52 = 61,720.48 : x
  2. Step 2: Convert to fraction form
    112,020.64/154,589.52 = 61,720.48/x
  3. Step 3: Cross multiply
    112,020.64x = 154,589.52 × 61,720.48
  4. Step 4: Simplify right side
    112,020.64x = 9,541,339,377.37
  5. Step 5: Solve for x
    x = 9,541,339,377.37/112,020.64
  6. Step 6: Final answer
    x = 85,174.83

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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.