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Finding the Fourth Proportional to 143,903.08, 215,899.57 and 49,135.51

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Solution

The fourth proportional to 143,903.08, 215,899.57 and 49,135.51 is: 73,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,903.08 : 215,899.57 = 49,135.51 : x
  2. Step 2: Convert to fraction form
    143,903.08/215,899.57 = 49,135.51/x
  3. Step 3: Cross multiply
    143,903.08x = 215,899.57 × 49,135.51
  4. Step 4: Simplify right side
    143,903.08x = 10,608,334,597.59
  5. Step 5: Solve for x
    x = 10,608,334,597.59/143,903.08
  6. Step 6: Final answer
    x = 73,718.61

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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.