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Finding the Fourth Proportional to 154,078.64, 212,694.01 and 93,668.58

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Solution

The fourth proportional to 154,078.64, 212,694.01 and 93,668.58 is: 129,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,078.64 : 212,694.01 = 93,668.58 : x
  2. Step 2: Convert to fraction form
    154,078.64/212,694.01 = 93,668.58/x
  3. Step 3: Cross multiply
    154,078.64x = 212,694.01 × 93,668.58
  4. Step 4: Simplify right side
    154,078.64x = 19,922,745,891.21
  5. Step 5: Solve for x
    x = 19,922,745,891.21/154,078.64
  6. Step 6: Final answer
    x = 129,302.45

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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.