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Finding the Fourth Proportional to 128,024.80, 192,051.60 and 39,277.60

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Solution

The fourth proportional to 128,024.80, 192,051.60 and 39,277.60 is: 58,920.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,024.80 : 192,051.60 = 39,277.60 : x
  2. Step 2: Convert to fraction form
    128,024.80/192,051.60 = 39,277.60/x
  3. Step 3: Cross multiply
    128,024.80x = 192,051.60 × 39,277.60
  4. Step 4: Simplify right side
    128,024.80x = 7,543,325,924.16
  5. Step 5: Solve for x
    x = 7,543,325,924.16/128,024.80
  6. Step 6: Final answer
    x = 58,920.82

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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.