Home / 107,719.77-161,129.55-75,696.53

Finding the Fourth Proportional to 107,719.77, 161,129.55 and 75,696.53

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Solution

The fourth proportional to 107,719.77, 161,129.55 and 75,696.53 is: 113,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,719.77 : 161,129.55 = 75,696.53 : x
  2. Step 2: Convert to fraction form
    107,719.77/161,129.55 = 75,696.53/x
  3. Step 3: Cross multiply
    107,719.77x = 161,129.55 × 75,696.53
  4. Step 4: Simplify right side
    107,719.77x = 12,196,947,293.68
  5. Step 5: Solve for x
    x = 12,196,947,293.68/107,719.77
  6. Step 6: Final answer
    x = 113,228.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.