Home / 102,879.80-154,160.08-71,351.36

Finding the Fourth Proportional to 102,879.80, 154,160.08 and 71,351.36

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Solution

The fourth proportional to 102,879.80, 154,160.08 and 71,351.36 is: 106,916.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,879.80 : 154,160.08 = 71,351.36 : x
  2. Step 2: Convert to fraction form
    102,879.80/154,160.08 = 71,351.36/x
  3. Step 3: Cross multiply
    102,879.80x = 154,160.08 × 71,351.36
  4. Step 4: Simplify right side
    102,879.80x = 10,999,531,365.71
  5. Step 5: Solve for x
    x = 10,999,531,365.71/102,879.80
  6. Step 6: Final answer
    x = 106,916.34

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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.