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Finding the Fourth Proportional to 118,754.79, 178,148.60 and 39,891.57

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Solution

The fourth proportional to 118,754.79, 178,148.60 and 39,891.57 is: 59,842.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,754.79 : 178,148.60 = 39,891.57 : x
  2. Step 2: Convert to fraction form
    118,754.79/178,148.60 = 39,891.57/x
  3. Step 3: Cross multiply
    118,754.79x = 178,148.60 × 39,891.57
  4. Step 4: Simplify right side
    118,754.79x = 7,106,627,147.84
  5. Step 5: Solve for x
    x = 7,106,627,147.84/118,754.79
  6. Step 6: Final answer
    x = 59,842.87

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1.5x scale

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.