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Finding the Fourth Proportional to 118,383.40, 177,591.30 and 39,489.40

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Solution

The fourth proportional to 118,383.40, 177,591.30 and 39,489.40 is: 59,239.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,383.40 : 177,591.30 = 39,489.40 : x
  2. Step 2: Convert to fraction form
    118,383.40/177,591.30 = 39,489.40/x
  3. Step 3: Cross multiply
    118,383.40x = 177,591.30 × 39,489.40
  4. Step 4: Simplify right side
    118,383.40x = 7,012,973,882.22
  5. Step 5: Solve for x
    x = 7,012,973,882.22/118,383.40
  6. Step 6: Final answer
    x = 59,239.50

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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.