Home / 129,225.21-178,304.64-75,499.85

Finding the Fourth Proportional to 129,225.21, 178,304.64 and 75,499.85

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Solution

The fourth proportional to 129,225.21, 178,304.64 and 75,499.85 is: 104,174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,225.21 : 178,304.64 = 75,499.85 : x
  2. Step 2: Convert to fraction form
    129,225.21/178,304.64 = 75,499.85/x
  3. Step 3: Cross multiply
    129,225.21x = 178,304.64 × 75,499.85
  4. Step 4: Simplify right side
    129,225.21x = 13,461,972,682.78
  5. Step 5: Solve for x
    x = 13,461,972,682.78/129,225.21
  6. Step 6: Final answer
    x = 104,174.51

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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.