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Finding the Fourth Proportional to 118,221.77, 177,359.39 and 39,339.11

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Solution

The fourth proportional to 118,221.77, 177,359.39 and 39,339.11 is: 59,017.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,221.77 : 177,359.39 = 39,339.11 : x
  2. Step 2: Convert to fraction form
    118,221.77/177,359.39 = 39,339.11/x
  3. Step 3: Cross multiply
    118,221.77x = 177,359.39 × 39,339.11
  4. Step 4: Simplify right side
    118,221.77x = 6,977,160,356.05
  5. Step 5: Solve for x
    x = 6,977,160,356.05/118,221.77
  6. Step 6: Final answer
    x = 59,017.56

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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.