Home / 185,012.91-255,318.48-100,129.77

Finding the Fourth Proportional to 185,012.91, 255,318.48 and 100,129.77

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Solution

The fourth proportional to 185,012.91, 255,318.48 and 100,129.77 is: 138,179.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,012.91 : 255,318.48 = 100,129.77 : x
  2. Step 2: Convert to fraction form
    185,012.91/255,318.48 = 100,129.77/x
  3. Step 3: Cross multiply
    185,012.91x = 255,318.48 × 100,129.77
  4. Step 4: Simplify right side
    185,012.91x = 25,564,980,679.15
  5. Step 5: Solve for x
    x = 25,564,980,679.15/185,012.91
  6. Step 6: Final answer
    x = 138,179.44

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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.