Home / 102,929.52-154,234.86-71,400.90

Finding the Fourth Proportional to 102,929.52, 154,234.86 and 71,400.90

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Solution

The fourth proportional to 102,929.52, 154,234.86 and 71,400.90 is: 106,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,929.52 : 154,234.86 = 71,400.90 : x
  2. Step 2: Convert to fraction form
    102,929.52/154,234.86 = 71,400.90/x
  3. Step 3: Cross multiply
    102,929.52x = 154,234.86 × 71,400.90
  4. Step 4: Simplify right side
    102,929.52x = 11,012,507,815.37
  5. Step 5: Solve for x
    x = 11,012,507,815.37/102,929.52
  6. Step 6: Final answer
    x = 106,990.76

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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.