Home / 115,427.40-173,105.10-45,328.20

Finding the Fourth Proportional to 115,427.40, 173,105.10 and 45,328.20

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Solution

The fourth proportional to 115,427.40, 173,105.10 and 45,328.20 is: 67,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,427.40 : 173,105.10 = 45,328.20 : x
  2. Step 2: Convert to fraction form
    115,427.40/173,105.10 = 45,328.20/x
  3. Step 3: Cross multiply
    115,427.40x = 173,105.10 × 45,328.20
  4. Step 4: Simplify right side
    115,427.40x = 7,846,542,593.82
  5. Step 5: Solve for x
    x = 7,846,542,593.82/115,427.40
  6. Step 6: Final answer
    x = 67,978.16

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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.