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Finding the Fourth Proportional to 103,361.64, 142,834.86 and 88,046.04

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Solution

The fourth proportional to 103,361.64, 142,834.86 and 88,046.04 is: 121,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,361.64 : 142,834.86 = 88,046.04 : x
  2. Step 2: Convert to fraction form
    103,361.64/142,834.86 = 88,046.04/x
  3. Step 3: Cross multiply
    103,361.64x = 142,834.86 × 88,046.04
  4. Step 4: Simplify right side
    103,361.64x = 12,576,043,796.95
  5. Step 5: Solve for x
    x = 12,576,043,796.95/103,361.64
  6. Step 6: Final answer
    x = 121,670.32

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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.