Home / 145,116.26-200,249.45-81,441.76

Finding the Fourth Proportional to 145,116.26, 200,249.45 and 81,441.76

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Solution

The fourth proportional to 145,116.26, 200,249.45 and 81,441.76 is: 112,383.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,116.26 : 200,249.45 = 81,441.76 : x
  2. Step 2: Convert to fraction form
    145,116.26/200,249.45 = 81,441.76/x
  3. Step 3: Cross multiply
    145,116.26x = 200,249.45 × 81,441.76
  4. Step 4: Simplify right side
    145,116.26x = 16,308,667,647.03
  5. Step 5: Solve for x
    x = 16,308,667,647.03/145,116.26
  6. Step 6: Final answer
    x = 112,383.46

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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.