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Finding the Fourth Proportional to 118,980.39, 164,203.30 and 65,276.48

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Solution

The fourth proportional to 118,980.39, 164,203.30 and 65,276.48 is: 90,087.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,980.39 : 164,203.30 = 65,276.48 : x
  2. Step 2: Convert to fraction form
    118,980.39/164,203.30 = 65,276.48/x
  3. Step 3: Cross multiply
    118,980.39x = 164,203.30 × 65,276.48
  4. Step 4: Simplify right side
    118,980.39x = 10,718,613,920.49
  5. Step 5: Solve for x
    x = 10,718,613,920.49/118,980.39
  6. Step 6: Final answer
    x = 90,087.23

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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.