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Finding the Fourth Proportional to 109,304.40, 163,956.60 and 89,864.40

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Solution

The fourth proportional to 109,304.40, 163,956.60 and 89,864.40 is: 134,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,304.40 : 163,956.60 = 89,864.40 : x
  2. Step 2: Convert to fraction form
    109,304.40/163,956.60 = 89,864.40/x
  3. Step 3: Cross multiply
    109,304.40x = 163,956.60 × 89,864.40
  4. Step 4: Simplify right side
    109,304.40x = 14,733,861,485.04
  5. Step 5: Solve for x
    x = 14,733,861,485.04/109,304.40
  6. Step 6: Final answer
    x = 134,796.60

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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.