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Finding the Fourth Proportional to 145,249.86, 200,455.56 and 81,591.42

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Solution

The fourth proportional to 145,249.86, 200,455.56 and 81,591.42 is: 112,602.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,249.86 : 200,455.56 = 81,591.42 : x
  2. Step 2: Convert to fraction form
    145,249.86/200,455.56 = 81,591.42/x
  3. Step 3: Cross multiply
    145,249.86x = 200,455.56 × 81,591.42
  4. Step 4: Simplify right side
    145,249.86x = 16,355,453,787.30
  5. Step 5: Solve for x
    x = 16,355,453,787.30/145,249.86
  6. Step 6: Final answer
    x = 112,602.20

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1.5x scale

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.