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Finding the Fourth Proportional to 117,959.25, 162,781.34 and 64,245.21

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Solution

The fourth proportional to 117,959.25, 162,781.34 and 64,245.21 is: 88,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,959.25 : 162,781.34 = 64,245.21 : x
  2. Step 2: Convert to fraction form
    117,959.25/162,781.34 = 64,245.21/x
  3. Step 3: Cross multiply
    117,959.25x = 162,781.34 × 64,245.21
  4. Step 4: Simplify right side
    117,959.25x = 10,457,921,051.16
  5. Step 5: Solve for x
    x = 10,457,921,051.16/117,959.25
  6. Step 6: Final answer
    x = 88,657.07

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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.