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Finding the Fourth Proportional to 143,463.51, 215,102.94 and 68,581.98

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Solution

The fourth proportional to 143,463.51, 215,102.94 and 68,581.98 is: 102,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,463.51 : 215,102.94 = 68,581.98 : x
  2. Step 2: Convert to fraction form
    143,463.51/215,102.94 = 68,581.98/x
  3. Step 3: Cross multiply
    143,463.51x = 215,102.94 × 68,581.98
  4. Step 4: Simplify right side
    143,463.51x = 14,752,185,529.02
  5. Step 5: Solve for x
    x = 14,752,185,529.02/143,463.51
  6. Step 6: Final answer
    x = 102,828.83

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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.