Home / 133,090.13-199,635.20-77,647.25

Finding the Fourth Proportional to 133,090.13, 199,635.20 and 77,647.25

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Solution

The fourth proportional to 133,090.13, 199,635.20 and 77,647.25 is: 116,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,090.13 : 199,635.20 = 77,647.25 : x
  2. Step 2: Convert to fraction form
    133,090.13/199,635.20 = 77,647.25/x
  3. Step 3: Cross multiply
    133,090.13x = 199,635.20 × 77,647.25
  4. Step 4: Simplify right side
    133,090.13x = 15,501,124,283.20
  5. Step 5: Solve for x
    x = 15,501,124,283.20/133,090.13
  6. Step 6: Final answer
    x = 116,470.88

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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.