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Finding the Fourth Proportional to 117,207.81, 161,746.11 and 63,493.86

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Solution

The fourth proportional to 117,207.81, 161,746.11 and 63,493.86 is: 87,621.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,207.81 : 161,746.11 = 63,493.86 : x
  2. Step 2: Convert to fraction form
    117,207.81/161,746.11 = 63,493.86/x
  3. Step 3: Cross multiply
    117,207.81x = 161,746.11 × 63,493.86
  4. Step 4: Simplify right side
    117,207.81x = 10,269,884,863.88
  5. Step 5: Solve for x
    x = 10,269,884,863.88/117,207.81
  6. Step 6: Final answer
    x = 87,621.17

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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.