Home / 113,157.20-169,511.62-77,530.97

Finding the Fourth Proportional to 113,157.20, 169,511.62 and 77,530.97

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Solution

The fourth proportional to 113,157.20, 169,511.62 and 77,530.97 is: 116,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,157.20 : 169,511.62 = 77,530.97 : x
  2. Step 2: Convert to fraction form
    113,157.20/169,511.62 = 77,530.97/x
  3. Step 3: Cross multiply
    113,157.20x = 169,511.62 × 77,530.97
  4. Step 4: Simplify right side
    113,157.20x = 13,142,399,477.31
  5. Step 5: Solve for x
    x = 13,142,399,477.31/113,157.20
  6. Step 6: Final answer
    x = 116,142.85

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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.