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Finding the Fourth Proportional to 125,490.96, 172,054.71 and 123,245.64

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Solution

The fourth proportional to 125,490.96, 172,054.71 and 123,245.64 is: 168,976.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,490.96 : 172,054.71 = 123,245.64 : x
  2. Step 2: Convert to fraction form
    125,490.96/172,054.71 = 123,245.64/x
  3. Step 3: Cross multiply
    125,490.96x = 172,054.71 × 123,245.64
  4. Step 4: Simplify right side
    125,490.96x = 21,204,992,848.96
  5. Step 5: Solve for x
    x = 21,204,992,848.96/125,490.96
  6. Step 6: Final answer
    x = 168,976.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.