Home / 107,905.64-149,003.79-67,688.53

Finding the Fourth Proportional to 107,905.64, 149,003.79 and 67,688.53

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Solution

The fourth proportional to 107,905.64, 149,003.79 and 67,688.53 is: 93,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,905.64 : 149,003.79 = 67,688.53 : x
  2. Step 2: Convert to fraction form
    107,905.64/149,003.79 = 67,688.53/x
  3. Step 3: Cross multiply
    107,905.64x = 149,003.79 × 67,688.53
  4. Step 4: Simplify right side
    107,905.64x = 10,085,846,764.51
  5. Step 5: Solve for x
    x = 10,085,846,764.51/107,905.64
  6. Step 6: Final answer
    x = 93,469.13

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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.