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Finding the Fourth Proportional to 163,668.49, 245,278.78 and 123,654.59

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Solution

The fourth proportional to 163,668.49, 245,278.78 and 123,654.59 is: 185,312.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,668.49 : 245,278.78 = 123,654.59 : x
  2. Step 2: Convert to fraction form
    163,668.49/245,278.78 = 123,654.59/x
  3. Step 3: Cross multiply
    163,668.49x = 245,278.78 × 123,654.59
  4. Step 4: Simplify right side
    163,668.49x = 30,329,845,441.07
  5. Step 5: Solve for x
    x = 30,329,845,441.07/163,668.49
  6. Step 6: Final answer
    x = 185,312.68

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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.