Home / 115,983.08-173,679.28-76,420.25

Finding the Fourth Proportional to 115,983.08, 173,679.28 and 76,420.25

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Solution

The fourth proportional to 115,983.08, 173,679.28 and 76,420.25 is: 114,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,983.08 : 173,679.28 = 76,420.25 : x
  2. Step 2: Convert to fraction form
    115,983.08/173,679.28 = 76,420.25/x
  3. Step 3: Cross multiply
    115,983.08x = 173,679.28 × 76,420.25
  4. Step 4: Simplify right side
    115,983.08x = 13,272,613,997.42
  5. Step 5: Solve for x
    x = 13,272,613,997.42/115,983.08
  6. Step 6: Final answer
    x = 114,435.78

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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.