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Finding the Fourth Proportional to 156,710.97, 215,900.24 and 108,266.49

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Solution

The fourth proportional to 156,710.97, 215,900.24 and 108,266.49 is: 149,158.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,710.97 : 215,900.24 = 108,266.49 : x
  2. Step 2: Convert to fraction form
    156,710.97/215,900.24 = 108,266.49/x
  3. Step 3: Cross multiply
    156,710.97x = 215,900.24 × 108,266.49
  4. Step 4: Simplify right side
    156,710.97x = 23,374,760,633.63
  5. Step 5: Solve for x
    x = 23,374,760,633.63/156,710.97
  6. Step 6: Final answer
    x = 149,158.42

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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.