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Finding the Fourth Proportional to 104,103.40, 143,662.53 and 56,356.74

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Solution

The fourth proportional to 104,103.40, 143,662.53 and 56,356.74 is: 77,772.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,103.40 : 143,662.53 = 56,356.74 : x
  2. Step 2: Convert to fraction form
    104,103.40/143,662.53 = 56,356.74/x
  3. Step 3: Cross multiply
    104,103.40x = 143,662.53 × 56,356.74
  4. Step 4: Simplify right side
    104,103.40x = 8,096,351,850.95
  5. Step 5: Solve for x
    x = 8,096,351,850.95/104,103.40
  6. Step 6: Final answer
    x = 77,772.21

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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.