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Finding the Fourth Proportional to 103,761.36, 143,059.68 and 67,894.56

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Solution

The fourth proportional to 103,761.36, 143,059.68 and 67,894.56 is: 93,608.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,761.36 : 143,059.68 = 67,894.56 : x
  2. Step 2: Convert to fraction form
    103,761.36/143,059.68 = 67,894.56/x
  3. Step 3: Cross multiply
    103,761.36x = 143,059.68 × 67,894.56
  4. Step 4: Simplify right side
    103,761.36x = 9,712,974,027.34
  5. Step 5: Solve for x
    x = 9,712,974,027.34/103,761.36
  6. Step 6: Final answer
    x = 93,608.78

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1.5x scale

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.