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Finding the Fourth Proportional to 118,429.60, 177,745.20 and 48,359.20

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Solution

The fourth proportional to 118,429.60, 177,745.20 and 48,359.20 is: 72,579.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,429.60 : 177,745.20 = 48,359.20 : x
  2. Step 2: Convert to fraction form
    118,429.60/177,745.20 = 48,359.20/x
  3. Step 3: Cross multiply
    118,429.60x = 177,745.20 × 48,359.20
  4. Step 4: Simplify right side
    118,429.60x = 8,595,615,675.84
  5. Step 5: Solve for x
    x = 8,595,615,675.84/118,429.60
  6. Step 6: Final answer
    x = 72,579.96

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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.