Home / 145,181.08-200,344.70-81,521.56

Finding the Fourth Proportional to 145,181.08, 200,344.70 and 81,521.56

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Solution

The fourth proportional to 145,181.08, 200,344.70 and 81,521.56 is: 112,496.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,181.08 : 200,344.70 = 81,521.56 : x
  2. Step 2: Convert to fraction form
    145,181.08/200,344.70 = 81,521.56/x
  3. Step 3: Cross multiply
    145,181.08x = 200,344.70 × 81,521.56
  4. Step 4: Simplify right side
    145,181.08x = 16,332,412,481.73
  5. Step 5: Solve for x
    x = 16,332,412,481.73/145,181.08
  6. Step 6: Final answer
    x = 112,496.84

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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.