Home / 117,299.19-161,870.90-66,311.13

Finding the Fourth Proportional to 117,299.19, 161,870.90 and 66,311.13

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Solution

The fourth proportional to 117,299.19, 161,870.90 and 66,311.13 is: 91,508.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,299.19 : 161,870.90 = 66,311.13 : x
  2. Step 2: Convert to fraction form
    117,299.19/161,870.90 = 66,311.13/x
  3. Step 3: Cross multiply
    117,299.19x = 161,870.90 × 66,311.13
  4. Step 4: Simplify right side
    117,299.19x = 10,733,841,961.56
  5. Step 5: Solve for x
    x = 10,733,841,961.56/117,299.19
  6. Step 6: Final answer
    x = 91,508.24

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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.