Home / 117,077.09-161,635.97-76,861.19

Finding the Fourth Proportional to 117,077.09, 161,635.97 and 76,861.19

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Solution

The fourth proportional to 117,077.09, 161,635.97 and 76,861.19 is: 106,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,077.09 : 161,635.97 = 76,861.19 : x
  2. Step 2: Convert to fraction form
    117,077.09/161,635.97 = 76,861.19/x
  3. Step 3: Cross multiply
    117,077.09x = 161,635.97 × 76,861.19
  4. Step 4: Simplify right side
    117,077.09x = 12,423,533,597.25
  5. Step 5: Solve for x
    x = 12,423,533,597.25/117,077.09
  6. Step 6: Final answer
    x = 106,114.13

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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.