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Finding the Fourth Proportional to 117,471.48, 162,036.91 and 69,691

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Solution

The fourth proportional to 117,471.48, 162,036.91 and 69,691 is: 96,129.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,471.48 : 162,036.91 = 69,691 : x
  2. Step 2: Convert to fraction form
    117,471.48/162,036.91 = 69,691/x
  3. Step 3: Cross multiply
    117,471.48x = 162,036.91 × 69,691
  4. Step 4: Simplify right side
    117,471.48x = 11,292,514,294.81
  5. Step 5: Solve for x
    x = 11,292,514,294.81/117,471.48
  6. Step 6: Final answer
    x = 96,129.84

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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.