Home / 133,249.31-199,817.07-77,128.16

Finding the Fourth Proportional to 133,249.31, 199,817.07 and 77,128.16

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Solution

The fourth proportional to 133,249.31, 199,817.07 and 77,128.16 is: 115,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,249.31 : 199,817.07 = 77,128.16 : x
  2. Step 2: Convert to fraction form
    133,249.31/199,817.07 = 77,128.16/x
  3. Step 3: Cross multiply
    133,249.31x = 199,817.07 × 77,128.16
  4. Step 4: Simplify right side
    133,249.31x = 15,411,522,432.60
  5. Step 5: Solve for x
    x = 15,411,522,432.60/133,249.31
  6. Step 6: Final answer
    x = 115,659.30

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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.