Home / 113,979.45-157,299.09-75,679.03

Finding the Fourth Proportional to 113,979.45, 157,299.09 and 75,679.03

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Solution

The fourth proportional to 113,979.45, 157,299.09 and 75,679.03 is: 104,442.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,979.45 : 157,299.09 = 75,679.03 : x
  2. Step 2: Convert to fraction form
    113,979.45/157,299.09 = 75,679.03/x
  3. Step 3: Cross multiply
    113,979.45x = 157,299.09 × 75,679.03
  4. Step 4: Simplify right side
    113,979.45x = 11,904,242,551.08
  5. Step 5: Solve for x
    x = 11,904,242,551.08/113,979.45
  6. Step 6: Final answer
    x = 104,442.01

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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.