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Finding the Fourth Proportional to 134,166.69, 185,154.49 and 78,966.01

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Solution

The fourth proportional to 134,166.69, 185,154.49 and 78,966.01 is: 108,975.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,166.69 : 185,154.49 = 78,966.01 : x
  2. Step 2: Convert to fraction form
    134,166.69/185,154.49 = 78,966.01/x
  3. Step 3: Cross multiply
    134,166.69x = 185,154.49 × 78,966.01
  4. Step 4: Simplify right side
    134,166.69x = 14,620,910,473.27
  5. Step 5: Solve for x
    x = 14,620,910,473.27/134,166.69
  6. Step 6: Final answer
    x = 108,975.71

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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.