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Finding the Fourth Proportional to 104,234.40, 143,834.64 and 61,209.28

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Solution

The fourth proportional to 104,234.40, 143,834.64 and 61,209.28 is: 84,463.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,234.40 : 143,834.64 = 61,209.28 : x
  2. Step 2: Convert to fraction form
    104,234.40/143,834.64 = 61,209.28/x
  3. Step 3: Cross multiply
    104,234.40x = 143,834.64 × 61,209.28
  4. Step 4: Simplify right side
    104,234.40x = 8,804,014,753.46
  5. Step 5: Solve for x
    x = 8,804,014,753.46/104,234.40
  6. Step 6: Final answer
    x = 84,463.62

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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.