Home / 113,905.03-170,720.85-78,366.28

Finding the Fourth Proportional to 113,905.03, 170,720.85 and 78,366.28

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Solution

The fourth proportional to 113,905.03, 170,720.85 and 78,366.28 is: 117,455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,905.03 : 170,720.85 = 78,366.28 : x
  2. Step 2: Convert to fraction form
    113,905.03/170,720.85 = 78,366.28/x
  3. Step 3: Cross multiply
    113,905.03x = 170,720.85 × 78,366.28
  4. Step 4: Simplify right side
    113,905.03x = 13,378,757,079.33
  5. Step 5: Solve for x
    x = 13,378,757,079.33/113,905.03
  6. Step 6: Final answer
    x = 117,455.37

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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.