Home / 112,799.10-155,665.18-61,815.54

Finding the Fourth Proportional to 112,799.10, 155,665.18 and 61,815.54

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Solution

The fourth proportional to 112,799.10, 155,665.18 and 61,815.54 is: 85,306.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,799.10 : 155,665.18 = 61,815.54 : x
  2. Step 2: Convert to fraction form
    112,799.10/155,665.18 = 61,815.54/x
  3. Step 3: Cross multiply
    112,799.10x = 155,665.18 × 61,815.54
  4. Step 4: Simplify right side
    112,799.10x = 9,622,527,160.90
  5. Step 5: Solve for x
    x = 9,622,527,160.90/112,799.10
  6. Step 6: Final answer
    x = 85,306.77

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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.