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Finding the Fourth Proportional to 118,663.61, 178,013.90 and 39,759.38

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Solution

The fourth proportional to 118,663.61, 178,013.90 and 39,759.38 is: 59,645.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,663.61 : 178,013.90 = 39,759.38 : x
  2. Step 2: Convert to fraction form
    118,663.61/178,013.90 = 39,759.38/x
  3. Step 3: Cross multiply
    118,663.61x = 178,013.90 × 39,759.38
  4. Step 4: Simplify right side
    118,663.61x = 7,077,722,672.93
  5. Step 5: Solve for x
    x = 7,077,722,672.93/118,663.61
  6. Step 6: Final answer
    x = 59,645.27

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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.