Home / 136,904.40-189,187.92-98,789.04

Finding the Fourth Proportional to 136,904.40, 189,187.92 and 98,789.04

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Solution

The fourth proportional to 136,904.40, 189,187.92 and 98,789.04 is: 136,516.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,904.40 : 189,187.92 = 98,789.04 : x
  2. Step 2: Convert to fraction form
    136,904.40/189,187.92 = 98,789.04/x
  3. Step 3: Cross multiply
    136,904.40x = 189,187.92 × 98,789.04
  4. Step 4: Simplify right side
    136,904.40x = 18,689,692,996.40
  5. Step 5: Solve for x
    x = 18,689,692,996.40/136,904.40
  6. Step 6: Final answer
    x = 136,516.38

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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.