Home / 145,443.09-200,709.50-81,781.04

Finding the Fourth Proportional to 145,443.09, 200,709.50 and 81,781.04

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Solution

The fourth proportional to 145,443.09, 200,709.50 and 81,781.04 is: 112,856.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,443.09 : 200,709.50 = 81,781.04 : x
  2. Step 2: Convert to fraction form
    145,443.09/200,709.50 = 81,781.04/x
  3. Step 3: Cross multiply
    145,443.09x = 200,709.50 × 81,781.04
  4. Step 4: Simplify right side
    145,443.09x = 16,414,231,740.75
  5. Step 5: Solve for x
    x = 16,414,231,740.75/145,443.09
  6. Step 6: Final answer
    x = 112,856.73

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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.