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Finding the Fourth Proportional to 140,313.87, 193,625.87 and 76,639.37

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Solution

The fourth proportional to 140,313.87, 193,625.87 and 76,639.37 is: 105,758.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,313.87 : 193,625.87 = 76,639.37 : x
  2. Step 2: Convert to fraction form
    140,313.87/193,625.87 = 76,639.37/x
  3. Step 3: Cross multiply
    140,313.87x = 193,625.87 × 76,639.37
  4. Step 4: Simplify right side
    140,313.87x = 14,839,363,341.18
  5. Step 5: Solve for x
    x = 14,839,363,341.18/140,313.87
  6. Step 6: Final answer
    x = 105,758.35

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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.