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Finding the Fourth Proportional to 118,692.54, 178,080.93 and 39,806.64

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Solution

The fourth proportional to 118,692.54, 178,080.93 and 39,806.64 is: 59,724.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,692.54 : 178,080.93 = 39,806.64 : x
  2. Step 2: Convert to fraction form
    118,692.54/178,080.93 = 39,806.64/x
  3. Step 3: Cross multiply
    118,692.54x = 178,080.93 × 39,806.64
  4. Step 4: Simplify right side
    118,692.54x = 7,088,803,471.38
  5. Step 5: Solve for x
    x = 7,088,803,471.38/118,692.54
  6. Step 6: Final answer
    x = 59,724.09

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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.