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Finding the Fourth Proportional to 168,998.82, 232,969.90 and 128,642.28

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Solution

The fourth proportional to 168,998.82, 232,969.90 and 128,642.28 is: 177,337.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,998.82 : 232,969.90 = 128,642.28 : x
  2. Step 2: Convert to fraction form
    168,998.82/232,969.90 = 128,642.28/x
  3. Step 3: Cross multiply
    168,998.82x = 232,969.90 × 128,642.28
  4. Step 4: Simplify right side
    168,998.82x = 29,969,779,107.37
  5. Step 5: Solve for x
    x = 29,969,779,107.37/168,998.82
  6. Step 6: Final answer
    x = 177,337.21

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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.