Home / 138,606.58-207,888.27-45,111.70

Finding the Fourth Proportional to 138,606.58, 207,888.27 and 45,111.70

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Solution

The fourth proportional to 138,606.58, 207,888.27 and 45,111.70 is: 67,660.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,606.58 : 207,888.27 = 45,111.70 : x
  2. Step 2: Convert to fraction form
    138,606.58/207,888.27 = 45,111.70/x
  3. Step 3: Cross multiply
    138,606.58x = 207,888.27 × 45,111.70
  4. Step 4: Simplify right side
    138,606.58x = 9,378,193,269.76
  5. Step 5: Solve for x
    x = 9,378,193,269.76/138,606.58
  6. Step 6: Final answer
    x = 67,660.52

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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.