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Finding the Fourth Proportional to 189,893.80, 262,042.85 and 103,835.71

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Solution

The fourth proportional to 189,893.80, 262,042.85 and 103,835.71 is: 143,287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,893.80 : 262,042.85 = 103,835.71 : x
  2. Step 2: Convert to fraction form
    189,893.80/262,042.85 = 103,835.71/x
  3. Step 3: Cross multiply
    189,893.80x = 262,042.85 × 103,835.71
  4. Step 4: Simplify right side
    189,893.80x = 27,209,403,909.25
  5. Step 5: Solve for x
    x = 27,209,403,909.25/189,893.80
  6. Step 6: Final answer
    x = 143,287.48

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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.