Home / 102,828.78-153,964.89-67,201.32

Finding the Fourth Proportional to 102,828.78, 153,964.89 and 67,201.32

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Solution

The fourth proportional to 102,828.78, 153,964.89 and 67,201.32 is: 100,620.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,828.78 : 153,964.89 = 67,201.32 : x
  2. Step 2: Convert to fraction form
    102,828.78/153,964.89 = 67,201.32/x
  3. Step 3: Cross multiply
    102,828.78x = 153,964.89 × 67,201.32
  4. Step 4: Simplify right side
    102,828.78x = 10,346,643,841.65
  5. Step 5: Solve for x
    x = 10,346,643,841.65/102,828.78
  6. Step 6: Final answer
    x = 100,620.12

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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.