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Finding the Fourth Proportional to 145,189.68, 217,745.64 and 39,983.64

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Solution

The fourth proportional to 145,189.68, 217,745.64 and 39,983.64 is: 59,964.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,189.68 : 217,745.64 = 39,983.64 : x
  2. Step 2: Convert to fraction form
    145,189.68/217,745.64 = 39,983.64/x
  3. Step 3: Cross multiply
    145,189.68x = 217,745.64 × 39,983.64
  4. Step 4: Simplify right side
    145,189.68x = 8,706,263,281.33
  5. Step 5: Solve for x
    x = 8,706,263,281.33/145,189.68
  6. Step 6: Final answer
    x = 59,964.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.