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Finding the Fourth Proportional to 128,410.17, 192,614.72 and 34,915.65

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Solution

The fourth proportional to 128,410.17, 192,614.72 and 34,915.65 is: 52,373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,410.17 : 192,614.72 = 34,915.65 : x
  2. Step 2: Convert to fraction form
    128,410.17/192,614.72 = 34,915.65/x
  3. Step 3: Cross multiply
    128,410.17x = 192,614.72 × 34,915.65
  4. Step 4: Simplify right side
    128,410.17x = 6,725,267,973.79
  5. Step 5: Solve for x
    x = 6,725,267,973.79/128,410.17
  6. Step 6: Final answer
    x = 52,373.33

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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.