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Finding the Fourth Proportional to 143,992.96, 215,841.60 and 69,003.52

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Solution

The fourth proportional to 143,992.96, 215,841.60 and 69,003.52 is: 103,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,992.96 : 215,841.60 = 69,003.52 : x
  2. Step 2: Convert to fraction form
    143,992.96/215,841.60 = 69,003.52/x
  3. Step 3: Cross multiply
    143,992.96x = 215,841.60 × 69,003.52
  4. Step 4: Simplify right side
    143,992.96x = 14,893,830,162.43
  5. Step 5: Solve for x
    x = 14,893,830,162.43/143,992.96
  6. Step 6: Final answer
    x = 103,434.43

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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.