Home / 115,666.40-173,305.20-76,203.20

Finding the Fourth Proportional to 115,666.40, 173,305.20 and 76,203.20

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Solution

The fourth proportional to 115,666.40, 173,305.20 and 76,203.20 is: 114,176.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,666.40 : 173,305.20 = 76,203.20 : x
  2. Step 2: Convert to fraction form
    115,666.40/173,305.20 = 76,203.20/x
  3. Step 3: Cross multiply
    115,666.40x = 173,305.20 × 76,203.20
  4. Step 4: Simplify right side
    115,666.40x = 13,206,410,816.64
  5. Step 5: Solve for x
    x = 13,206,410,816.64/115,666.40
  6. Step 6: Final answer
    x = 114,176.73

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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.