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Finding the Fourth Proportional to 151,298.46, 208,791 and 87,634.98

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Solution

The fourth proportional to 151,298.46, 208,791 and 87,634.98 is: 120,935.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,298.46 : 208,791 = 87,634.98 : x
  2. Step 2: Convert to fraction form
    151,298.46/208,791 = 87,634.98/x
  3. Step 3: Cross multiply
    151,298.46x = 208,791 × 87,634.98
  4. Step 4: Simplify right side
    151,298.46x = 18,297,395,109.18
  5. Step 5: Solve for x
    x = 18,297,395,109.18/151,298.46
  6. Step 6: Final answer
    x = 120,935.77

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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.