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Finding the Fourth Proportional to 118,682.76, 177,967.98 and 43,778.28

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Solution

The fourth proportional to 118,682.76, 177,967.98 and 43,778.28 is: 65,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,682.76 : 177,967.98 = 43,778.28 : x
  2. Step 2: Convert to fraction form
    118,682.76/177,967.98 = 43,778.28/x
  3. Step 3: Cross multiply
    118,682.76x = 177,967.98 × 43,778.28
  4. Step 4: Simplify right side
    118,682.76x = 7,791,132,059.47
  5. Step 5: Solve for x
    x = 7,791,132,059.47/118,682.76
  6. Step 6: Final answer
    x = 65,646.70

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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.