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Finding the Fourth Proportional to 128,299.68, 192,459.24 and 34,803

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Solution

The fourth proportional to 128,299.68, 192,459.24 and 34,803 is: 52,207.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,299.68 : 192,459.24 = 34,803 : x
  2. Step 2: Convert to fraction form
    128,299.68/192,459.24 = 34,803/x
  3. Step 3: Cross multiply
    128,299.68x = 192,459.24 × 34,803
  4. Step 4: Simplify right side
    128,299.68x = 6,698,158,929.72
  5. Step 5: Solve for x
    x = 6,698,158,929.72/128,299.68
  6. Step 6: Final answer
    x = 52,207.14

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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.