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Finding the Fourth Proportional to 118,520.24, 177,780 and 39,616.40

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Solution

The fourth proportional to 118,520.24, 177,780 and 39,616.40 is: 59,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,520.24 : 177,780 = 39,616.40 : x
  2. Step 2: Convert to fraction form
    118,520.24/177,780 = 39,616.40/x
  3. Step 3: Cross multiply
    118,520.24x = 177,780 × 39,616.40
  4. Step 4: Simplify right side
    118,520.24x = 7,043,003,592
  5. Step 5: Solve for x
    x = 7,043,003,592/118,520.24
  6. Step 6: Final answer
    x = 59,424.48

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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.