Home / 188,921.52-260,702.28-121,853.52

Finding the Fourth Proportional to 188,921.52, 260,702.28 and 121,853.52

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Solution

The fourth proportional to 188,921.52, 260,702.28 and 121,853.52 is: 168,151.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,921.52 : 260,702.28 = 121,853.52 : x
  2. Step 2: Convert to fraction form
    188,921.52/260,702.28 = 121,853.52/x
  3. Step 3: Cross multiply
    188,921.52x = 260,702.28 × 121,853.52
  4. Step 4: Simplify right side
    188,921.52x = 31,767,490,490.03
  5. Step 5: Solve for x
    x = 31,767,490,490.03/188,921.52
  6. Step 6: Final answer
    x = 168,151.78

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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.