Home / 117,310.06-161,845.45-77,045.64

Finding the Fourth Proportional to 117,310.06, 161,845.45 and 77,045.64

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Solution

The fourth proportional to 117,310.06, 161,845.45 and 77,045.64 is: 106,295.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,310.06 : 161,845.45 = 77,045.64 : x
  2. Step 2: Convert to fraction form
    117,310.06/161,845.45 = 77,045.64/x
  3. Step 3: Cross multiply
    117,310.06x = 161,845.45 × 77,045.64
  4. Step 4: Simplify right side
    117,310.06x = 12,469,486,276.34
  5. Step 5: Solve for x
    x = 12,469,486,276.34/117,310.06
  6. Step 6: Final answer
    x = 106,295.11

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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.