Home / 127,989.96-191,829.26-90,560.84

Finding the Fourth Proportional to 127,989.96, 191,829.26 and 90,560.84

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Solution

The fourth proportional to 127,989.96, 191,829.26 and 90,560.84 is: 135,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,989.96 : 191,829.26 = 90,560.84 : x
  2. Step 2: Convert to fraction form
    127,989.96/191,829.26 = 90,560.84/x
  3. Step 3: Cross multiply
    127,989.96x = 191,829.26 × 90,560.84
  4. Step 4: Simplify right side
    127,989.96x = 17,372,218,189.43
  5. Step 5: Solve for x
    x = 17,372,218,189.43/127,989.96
  6. Step 6: Final answer
    x = 135,731.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.