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Finding the Fourth Proportional to 169,986.80, 254,980.20 and 113,999.60

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Solution

The fourth proportional to 169,986.80, 254,980.20 and 113,999.60 is: 170,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,986.80 : 254,980.20 = 113,999.60 : x
  2. Step 2: Convert to fraction form
    169,986.80/254,980.20 = 113,999.60/x
  3. Step 3: Cross multiply
    169,986.80x = 254,980.20 × 113,999.60
  4. Step 4: Simplify right side
    169,986.80x = 29,067,640,807.92
  5. Step 5: Solve for x
    x = 29,067,640,807.92/169,986.80
  6. Step 6: Final answer
    x = 170,999.40

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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.