Home / 138,645.18-190,910.94-114,355.86

Finding the Fourth Proportional to 138,645.18, 190,910.94 and 114,355.86

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Solution

The fourth proportional to 138,645.18, 190,910.94 and 114,355.86 is: 157,465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,645.18 : 190,910.94 = 114,355.86 : x
  2. Step 2: Convert to fraction form
    138,645.18/190,910.94 = 114,355.86/x
  3. Step 3: Cross multiply
    138,645.18x = 190,910.94 × 114,355.86
  4. Step 4: Simplify right side
    138,645.18x = 21,831,784,727.11
  5. Step 5: Solve for x
    x = 21,831,784,727.11/138,645.18
  6. Step 6: Final answer
    x = 157,465.15

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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.