Home / 101,640.14-140,268.66-61,353.38

Finding the Fourth Proportional to 101,640.14, 140,268.66 and 61,353.38

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Solution

The fourth proportional to 101,640.14, 140,268.66 and 61,353.38 is: 84,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,640.14 : 140,268.66 = 61,353.38 : x
  2. Step 2: Convert to fraction form
    101,640.14/140,268.66 = 61,353.38/x
  3. Step 3: Cross multiply
    101,640.14x = 140,268.66 × 61,353.38
  4. Step 4: Simplify right side
    101,640.14x = 8,605,956,399.07
  5. Step 5: Solve for x
    x = 8,605,956,399.07/101,640.14
  6. Step 6: Final answer
    x = 84,670.84

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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.