Home / 112,771.38-155,586.19-64,338.51

Finding the Fourth Proportional to 112,771.38, 155,586.19 and 64,338.51

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Solution

The fourth proportional to 112,771.38, 155,586.19 and 64,338.51 is: 88,765.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,771.38 : 155,586.19 = 64,338.51 : x
  2. Step 2: Convert to fraction form
    112,771.38/155,586.19 = 64,338.51/x
  3. Step 3: Cross multiply
    112,771.38x = 155,586.19 × 64,338.51
  4. Step 4: Simplify right side
    112,771.38x = 10,010,183,708.45
  5. Step 5: Solve for x
    x = 10,010,183,708.45/112,771.38
  6. Step 6: Final answer
    x = 88,765.29

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1.5x scale

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.