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Finding the Fourth Proportional to 145,891.81, 201,318.64 and 82,245.25

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Solution

The fourth proportional to 145,891.81, 201,318.64 and 82,245.25 is: 113,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,891.81 : 201,318.64 = 82,245.25 : x
  2. Step 2: Convert to fraction form
    145,891.81/201,318.64 = 82,245.25/x
  3. Step 3: Cross multiply
    145,891.81x = 201,318.64 × 82,245.25
  4. Step 4: Simplify right side
    145,891.81x = 16,557,501,876.46
  5. Step 5: Solve for x
    x = 16,557,501,876.46/145,891.81
  6. Step 6: Final answer
    x = 113,491.65

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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.