Home / 138,211.72-207,043.29-106,511.76

Finding the Fourth Proportional to 138,211.72, 207,043.29 and 106,511.76

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Solution

The fourth proportional to 138,211.72, 207,043.29 and 106,511.76 is: 159,556.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,211.72 : 207,043.29 = 106,511.76 : x
  2. Step 2: Convert to fraction form
    138,211.72/207,043.29 = 106,511.76/x
  3. Step 3: Cross multiply
    138,211.72x = 207,043.29 × 106,511.76
  4. Step 4: Simplify right side
    138,211.72x = 22,052,545,214.09
  5. Step 5: Solve for x
    x = 22,052,545,214.09/138,211.72
  6. Step 6: Final answer
    x = 159,556.26

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1.5x scale

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.