Home / 112,648.62-155,455.14-61,661.61

Finding the Fourth Proportional to 112,648.62, 155,455.14 and 61,661.61

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Solution

The fourth proportional to 112,648.62, 155,455.14 and 61,661.61 is: 85,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,648.62 : 155,455.14 = 61,661.61 : x
  2. Step 2: Convert to fraction form
    112,648.62/155,455.14 = 61,661.61/x
  3. Step 3: Cross multiply
    112,648.62x = 155,455.14 × 61,661.61
  4. Step 4: Simplify right side
    112,648.62x = 9,585,614,215.18
  5. Step 5: Solve for x
    x = 9,585,614,215.18/112,648.62
  6. Step 6: Final answer
    x = 85,093.05

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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.