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Finding the Fourth Proportional to 151,464.60, 209,036.70 and 91,054.80

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Solution

The fourth proportional to 151,464.60, 209,036.70 and 91,054.80 is: 125,664.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,464.60 : 209,036.70 = 91,054.80 : x
  2. Step 2: Convert to fraction form
    151,464.60/209,036.70 = 91,054.80/x
  3. Step 3: Cross multiply
    151,464.60x = 209,036.70 × 91,054.80
  4. Step 4: Simplify right side
    151,464.60x = 19,033,794,911.16
  5. Step 5: Solve for x
    x = 19,033,794,911.16/151,464.60
  6. Step 6: Final answer
    x = 125,664.97

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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.