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Finding the Fourth Proportional to 151,999.70, 227,999.55 and 128,380.10

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Solution

The fourth proportional to 151,999.70, 227,999.55 and 128,380.10 is: 192,570.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,999.70 : 227,999.55 = 128,380.10 : x
  2. Step 2: Convert to fraction form
    151,999.70/227,999.55 = 128,380.10/x
  3. Step 3: Cross multiply
    151,999.70x = 227,999.55 × 128,380.10
  4. Step 4: Simplify right side
    151,999.70x = 29,270,605,028.96
  5. Step 5: Solve for x
    x = 29,270,605,028.96/151,999.70
  6. Step 6: Final answer
    x = 192,570.15

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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.