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Finding the Fourth Proportional to 98,361.60, 135,751.20 and 60,113.28

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Solution

The fourth proportional to 98,361.60, 135,751.20 and 60,113.28 is: 82,963.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,361.60 : 135,751.20 = 60,113.28 : x
  2. Step 2: Convert to fraction form
    98,361.60/135,751.20 = 60,113.28/x
  3. Step 3: Cross multiply
    98,361.60x = 135,751.20 × 60,113.28
  4. Step 4: Simplify right side
    98,361.60x = 8,160,449,895.94
  5. Step 5: Solve for x
    x = 8,160,449,895.94/98,361.60
  6. Step 6: Final answer
    x = 82,963.78

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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.