Home / 111,913.62-154,436.13-61,609.38

Finding the Fourth Proportional to 111,913.62, 154,436.13 and 61,609.38

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Solution

The fourth proportional to 111,913.62, 154,436.13 and 61,609.38 is: 85,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,913.62 : 154,436.13 = 61,609.38 : x
  2. Step 2: Convert to fraction form
    111,913.62/154,436.13 = 61,609.38/x
  3. Step 3: Cross multiply
    111,913.62x = 154,436.13 × 61,609.38
  4. Step 4: Simplify right side
    111,913.62x = 9,514,714,218.90
  5. Step 5: Solve for x
    x = 9,514,714,218.90/111,913.62
  6. Step 6: Final answer
    x = 85,018.38

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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.