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Finding the Fourth Proportional to 112,304.64, 154,913.28 and 67,584

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Solution

The fourth proportional to 112,304.64, 154,913.28 and 67,584 is: 93,225.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,304.64 : 154,913.28 = 67,584 : x
  2. Step 2: Convert to fraction form
    112,304.64/154,913.28 = 67,584/x
  3. Step 3: Cross multiply
    112,304.64x = 154,913.28 × 67,584
  4. Step 4: Simplify right side
    112,304.64x = 10,469,659,115.52
  5. Step 5: Solve for x
    x = 10,469,659,115.52/112,304.64
  6. Step 6: Final answer
    x = 93,225.53

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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.