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Finding the Fourth Proportional to 118,653.30, 177,987.82 and 39,768.20

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Solution

The fourth proportional to 118,653.30, 177,987.82 and 39,768.20 is: 59,654.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,653.30 : 177,987.82 = 39,768.20 : x
  2. Step 2: Convert to fraction form
    118,653.30/177,987.82 = 39,768.20/x
  3. Step 3: Cross multiply
    118,653.30x = 177,987.82 × 39,768.20
  4. Step 4: Simplify right side
    118,653.30x = 7,078,255,223.32
  5. Step 5: Solve for x
    x = 7,078,255,223.32/118,653.30
  6. Step 6: Final answer
    x = 59,654.94

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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.