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Finding the Fourth Proportional to 181,248.32, 271,921.48 and 128,989.56

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Solution

The fourth proportional to 181,248.32, 271,921.48 and 128,989.56 is: 193,519.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,248.32 : 271,921.48 = 128,989.56 : x
  2. Step 2: Convert to fraction form
    181,248.32/271,921.48 = 128,989.56/x
  3. Step 3: Cross multiply
    181,248.32x = 271,921.48 × 128,989.56
  4. Step 4: Simplify right side
    181,248.32x = 35,075,032,059.75
  5. Step 5: Solve for x
    x = 35,075,032,059.75/181,248.32
  6. Step 6: Final answer
    x = 193,519.21

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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.