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Finding the Fourth Proportional to 128,485.89, 192,728.85 and 44,248.14

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Solution

The fourth proportional to 128,485.89, 192,728.85 and 44,248.14 is: 66,372.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,485.89 : 192,728.85 = 44,248.14 : x
  2. Step 2: Convert to fraction form
    128,485.89/192,728.85 = 44,248.14/x
  3. Step 3: Cross multiply
    128,485.89x = 192,728.85 × 44,248.14
  4. Step 4: Simplify right side
    128,485.89x = 8,527,893,136.84
  5. Step 5: Solve for x
    x = 8,527,893,136.84/128,485.89
  6. Step 6: Final answer
    x = 66,372.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.