Home / 136,406.92-188,270.60-91,669

Finding the Fourth Proportional to 136,406.92, 188,270.60 and 91,669

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Solution

The fourth proportional to 136,406.92, 188,270.60 and 91,669 is: 126,522.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,406.92 : 188,270.60 = 91,669 : x
  2. Step 2: Convert to fraction form
    136,406.92/188,270.60 = 91,669/x
  3. Step 3: Cross multiply
    136,406.92x = 188,270.60 × 91,669
  4. Step 4: Simplify right side
    136,406.92x = 17,258,577,631.40
  5. Step 5: Solve for x
    x = 17,258,577,631.40/136,406.92
  6. Step 6: Final answer
    x = 126,522.74

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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.