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Finding the Fourth Proportional to 154,659.60, 231,989.40 and 115,293.60

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Solution

The fourth proportional to 154,659.60, 231,989.40 and 115,293.60 is: 172,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,659.60 : 231,989.40 = 115,293.60 : x
  2. Step 2: Convert to fraction form
    154,659.60/231,989.40 = 115,293.60/x
  3. Step 3: Cross multiply
    154,659.60x = 231,989.40 × 115,293.60
  4. Step 4: Simplify right side
    154,659.60x = 26,746,893,087.84
  5. Step 5: Solve for x
    x = 26,746,893,087.84/154,659.60
  6. Step 6: Final answer
    x = 172,940.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.