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Finding the Fourth Proportional to 128,099.84, 192,152.07 and 39,354.14

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Solution

The fourth proportional to 128,099.84, 192,152.07 and 39,354.14 is: 59,031.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,099.84 : 192,152.07 = 39,354.14 : x
  2. Step 2: Convert to fraction form
    128,099.84/192,152.07 = 39,354.14/x
  3. Step 3: Cross multiply
    128,099.84x = 192,152.07 × 39,354.14
  4. Step 4: Simplify right side
    128,099.84x = 7,561,979,464.07
  5. Step 5: Solve for x
    x = 7,561,979,464.07/128,099.84
  6. Step 6: Final answer
    x = 59,031.92

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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.