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Finding the Fourth Proportional to 108,474.02, 149,709.09 and 65,455.73

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Solution

The fourth proportional to 108,474.02, 149,709.09 and 65,455.73 is: 90,337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,474.02 : 149,709.09 = 65,455.73 : x
  2. Step 2: Convert to fraction form
    108,474.02/149,709.09 = 65,455.73/x
  3. Step 3: Cross multiply
    108,474.02x = 149,709.09 × 65,455.73
  4. Step 4: Simplify right side
    108,474.02x = 9,799,317,773.59
  5. Step 5: Solve for x
    x = 9,799,317,773.59/108,474.02
  6. Step 6: Final answer
    x = 90,337.92

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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.