Home / 138,093.50-207,056.39-90,097.76

Finding the Fourth Proportional to 138,093.50, 207,056.39 and 90,097.76

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Solution

The fourth proportional to 138,093.50, 207,056.39 and 90,097.76 is: 135,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,093.50 : 207,056.39 = 90,097.76 : x
  2. Step 2: Convert to fraction form
    138,093.50/207,056.39 = 90,097.76/x
  3. Step 3: Cross multiply
    138,093.50x = 207,056.39 × 90,097.76
  4. Step 4: Simplify right side
    138,093.50x = 18,655,316,932.69
  5. Step 5: Solve for x
    x = 18,655,316,932.69/138,093.50
  6. Step 6: Final answer
    x = 135,091.93

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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.