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Finding the Fourth Proportional to 108,881.64, 150,255.54 and 61,133.88

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Solution

The fourth proportional to 108,881.64, 150,255.54 and 61,133.88 is: 84,364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,881.64 : 150,255.54 = 61,133.88 : x
  2. Step 2: Convert to fraction form
    108,881.64/150,255.54 = 61,133.88/x
  3. Step 3: Cross multiply
    108,881.64x = 150,255.54 × 61,133.88
  4. Step 4: Simplify right side
    108,881.64x = 9,185,704,151.70
  5. Step 5: Solve for x
    x = 9,185,704,151.70/108,881.64
  6. Step 6: Final answer
    x = 84,364.12

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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.