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Finding the Fourth Proportional to 128,496.16, 192,721.02 and 34,980.04

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Solution

The fourth proportional to 128,496.16, 192,721.02 and 34,980.04 is: 52,463.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,496.16 : 192,721.02 = 34,980.04 : x
  2. Step 2: Convert to fraction form
    128,496.16/192,721.02 = 34,980.04/x
  3. Step 3: Cross multiply
    128,496.16x = 192,721.02 × 34,980.04
  4. Step 4: Simplify right side
    128,496.16x = 6,741,388,988.44
  5. Step 5: Solve for x
    x = 6,741,388,988.44/128,496.16
  6. Step 6: Final answer
    x = 52,463.74

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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.