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Finding the Fourth Proportional to 117,755.57, 162,501.12 and 64,039.43

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Solution

The fourth proportional to 117,755.57, 162,501.12 and 64,039.43 is: 88,373.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,755.57 : 162,501.12 = 64,039.43 : x
  2. Step 2: Convert to fraction form
    117,755.57/162,501.12 = 64,039.43/x
  3. Step 3: Cross multiply
    117,755.57x = 162,501.12 × 64,039.43
  4. Step 4: Simplify right side
    117,755.57x = 10,406,479,505.41
  5. Step 5: Solve for x
    x = 10,406,479,505.41/117,755.57
  6. Step 6: Final answer
    x = 88,373.56

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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.