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Finding the Fourth Proportional to 151,503.64, 209,076.06 and 84,439.96

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Solution

The fourth proportional to 151,503.64, 209,076.06 and 84,439.96 is: 116,527.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,503.64 : 209,076.06 = 84,439.96 : x
  2. Step 2: Convert to fraction form
    151,503.64/209,076.06 = 84,439.96/x
  3. Step 3: Cross multiply
    151,503.64x = 209,076.06 × 84,439.96
  4. Step 4: Simplify right side
    151,503.64x = 17,654,374,143.36
  5. Step 5: Solve for x
    x = 17,654,374,143.36/151,503.64
  6. Step 6: Final answer
    x = 116,527.72

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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.