Home / 102,749.10-154,121.49-47,345.10

Finding the Fourth Proportional to 102,749.10, 154,121.49 and 47,345.10

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Solution

The fourth proportional to 102,749.10, 154,121.49 and 47,345.10 is: 71,016.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,749.10 : 154,121.49 = 47,345.10 : x
  2. Step 2: Convert to fraction form
    102,749.10/154,121.49 = 47,345.10/x
  3. Step 3: Cross multiply
    102,749.10x = 154,121.49 × 47,345.10
  4. Step 4: Simplify right side
    102,749.10x = 7,296,897,356.20
  5. Step 5: Solve for x
    x = 7,296,897,356.20/102,749.10
  6. Step 6: Final answer
    x = 71,016.65

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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.