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Finding the Fourth Proportional to 170,640, 235,454.04 and 99,003.60

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Solution

The fourth proportional to 170,640, 235,454.04 and 99,003.60 is: 136,608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,640 : 235,454.04 = 99,003.60 : x
  2. Step 2: Convert to fraction form
    170,640/235,454.04 = 99,003.60/x
  3. Step 3: Cross multiply
    170,640x = 235,454.04 × 99,003.60
  4. Step 4: Simplify right side
    170,640x = 23,310,797,594.54
  5. Step 5: Solve for x
    x = 23,310,797,594.54/170,640
  6. Step 6: Final answer
    x = 136,608.05

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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.