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Finding the Fourth Proportional to 192,144.96, 265,083.84 and 128,381.76

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Solution

The fourth proportional to 192,144.96, 265,083.84 and 128,381.76 is: 177,115.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,144.96 : 265,083.84 = 128,381.76 : x
  2. Step 2: Convert to fraction form
    192,144.96/265,083.84 = 128,381.76/x
  3. Step 3: Cross multiply
    192,144.96x = 265,083.84 × 128,381.76
  4. Step 4: Simplify right side
    192,144.96x = 34,031,929,926.76
  5. Step 5: Solve for x
    x = 34,031,929,926.76/192,144.96
  6. Step 6: Final answer
    x = 177,115.91

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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.