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Finding the Fourth Proportional to 118,475.78, 177,713.64 and 47,430.39

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Solution

The fourth proportional to 118,475.78, 177,713.64 and 47,430.39 is: 71,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,475.78 : 177,713.64 = 47,430.39 : x
  2. Step 2: Convert to fraction form
    118,475.78/177,713.64 = 47,430.39/x
  3. Step 3: Cross multiply
    118,475.78x = 177,713.64 × 47,430.39
  4. Step 4: Simplify right side
    118,475.78x = 8,429,027,253.52
  5. Step 5: Solve for x
    x = 8,429,027,253.52/118,475.78
  6. Step 6: Final answer
    x = 71,145.58

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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.