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Finding the Fourth Proportional to 188,652, 260,276.22 and 128,117.64

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Solution

The fourth proportional to 188,652, 260,276.22 and 128,117.64 is: 176,759.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,652 : 260,276.22 = 128,117.64 : x
  2. Step 2: Convert to fraction form
    188,652/260,276.22 = 128,117.64/x
  3. Step 3: Cross multiply
    188,652x = 260,276.22 × 128,117.64
  4. Step 4: Simplify right side
    188,652x = 33,345,975,054.52
  5. Step 5: Solve for x
    x = 33,345,975,054.52/188,652
  6. Step 6: Final answer
    x = 176,759.19

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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.