Home / 138,065.22-207,141.30-49,316.76

Finding the Fourth Proportional to 138,065.22, 207,141.30 and 49,316.76

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Solution

The fourth proportional to 138,065.22, 207,141.30 and 49,316.76 is: 73,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,065.22 : 207,141.30 = 49,316.76 : x
  2. Step 2: Convert to fraction form
    138,065.22/207,141.30 = 49,316.76/x
  3. Step 3: Cross multiply
    138,065.22x = 207,141.30 × 49,316.76
  4. Step 4: Simplify right side
    138,065.22x = 10,215,537,778.19
  5. Step 5: Solve for x
    x = 10,215,537,778.19/138,065.22
  6. Step 6: Final answer
    x = 73,990.67

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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.