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Finding the Fourth Proportional to 108,611.84, 149,881.88 and 63,287

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Solution

The fourth proportional to 108,611.84, 149,881.88 and 63,287 is: 87,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,611.84 : 149,881.88 = 63,287 : x
  2. Step 2: Convert to fraction form
    108,611.84/149,881.88 = 63,287/x
  3. Step 3: Cross multiply
    108,611.84x = 149,881.88 × 63,287
  4. Step 4: Simplify right side
    108,611.84x = 9,485,574,539.56
  5. Step 5: Solve for x
    x = 9,485,574,539.56/108,611.84
  6. Step 6: Final answer
    x = 87,334.63

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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.