Home / 145,428.32-200,709.02-81,764.75

Finding the Fourth Proportional to 145,428.32, 200,709.02 and 81,764.75

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Solution

The fourth proportional to 145,428.32, 200,709.02 and 81,764.75 is: 112,845.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,428.32 : 200,709.02 = 81,764.75 : x
  2. Step 2: Convert to fraction form
    145,428.32/200,709.02 = 81,764.75/x
  3. Step 3: Cross multiply
    145,428.32x = 200,709.02 × 81,764.75
  4. Step 4: Simplify right side
    145,428.32x = 16,410,922,843.05
  5. Step 5: Solve for x
    x = 16,410,922,843.05/145,428.32
  6. Step 6: Final answer
    x = 112,845.44

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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.