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Finding the Fourth Proportional to 118,996.60, 164,214.64 and 65,280.24

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Solution

The fourth proportional to 118,996.60, 164,214.64 and 65,280.24 is: 90,086.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,996.60 : 164,214.64 = 65,280.24 : x
  2. Step 2: Convert to fraction form
    118,996.60/164,214.64 = 65,280.24/x
  3. Step 3: Cross multiply
    118,996.60x = 164,214.64 × 65,280.24
  4. Step 4: Simplify right side
    118,996.60x = 10,719,971,110.71
  5. Step 5: Solve for x
    x = 10,719,971,110.71/118,996.60
  6. Step 6: Final answer
    x = 90,086.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.