Home / 122,181.12-168,712.68-91,913.88

Finding the Fourth Proportional to 122,181.12, 168,712.68 and 91,913.88

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Solution

The fourth proportional to 122,181.12, 168,712.68 and 91,913.88 is: 126,918.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,181.12 : 168,712.68 = 91,913.88 : x
  2. Step 2: Convert to fraction form
    122,181.12/168,712.68 = 91,913.88/x
  3. Step 3: Cross multiply
    122,181.12x = 168,712.68 × 91,913.88
  4. Step 4: Simplify right side
    122,181.12x = 15,507,037,024.00
  5. Step 5: Solve for x
    x = 15,507,037,024.00/122,181.12
  6. Step 6: Final answer
    x = 126,918.44

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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.