Home / 117,115.18-161,583.15-71,776.54

Finding the Fourth Proportional to 117,115.18, 161,583.15 and 71,776.54

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Solution

The fourth proportional to 117,115.18, 161,583.15 and 71,776.54 is: 99,029.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,115.18 : 161,583.15 = 71,776.54 : x
  2. Step 2: Convert to fraction form
    117,115.18/161,583.15 = 71,776.54/x
  3. Step 3: Cross multiply
    117,115.18x = 161,583.15 × 71,776.54
  4. Step 4: Simplify right side
    117,115.18x = 11,597,879,429.30
  5. Step 5: Solve for x
    x = 11,597,879,429.30/117,115.18
  6. Step 6: Final answer
    x = 99,029.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.