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Finding the Fourth Proportional to 168,687.15, 232,749.90 and 100,726.14

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Solution

The fourth proportional to 168,687.15, 232,749.90 and 100,726.14 is: 138,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,687.15 : 232,749.90 = 100,726.14 : x
  2. Step 2: Convert to fraction form
    168,687.15/232,749.90 = 100,726.14/x
  3. Step 3: Cross multiply
    168,687.15x = 232,749.90 × 100,726.14
  4. Step 4: Simplify right side
    168,687.15x = 23,443,999,012.39
  5. Step 5: Solve for x
    x = 23,443,999,012.39/168,687.15
  6. Step 6: Final answer
    x = 138,979.16

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1.5x scale

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.