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Finding the Fourth Proportional to 128,089.74, 192,003.30 and 53,253.30

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Solution

The fourth proportional to 128,089.74, 192,003.30 and 53,253.30 is: 79,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,089.74 : 192,003.30 = 53,253.30 : x
  2. Step 2: Convert to fraction form
    128,089.74/192,003.30 = 53,253.30/x
  3. Step 3: Cross multiply
    128,089.74x = 192,003.30 × 53,253.30
  4. Step 4: Simplify right side
    128,089.74x = 10,224,809,335.89
  5. Step 5: Solve for x
    x = 10,224,809,335.89/128,089.74
  6. Step 6: Final answer
    x = 79,825.36

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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.