Home / 128,259.72-192,389.58-34,765.47

Finding the Fourth Proportional to 128,259.72, 192,389.58 and 34,765.47

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Solution

The fourth proportional to 128,259.72, 192,389.58 and 34,765.47 is: 52,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,259.72 : 192,389.58 = 34,765.47 : x
  2. Step 2: Convert to fraction form
    128,259.72/192,389.58 = 34,765.47/x
  3. Step 3: Cross multiply
    128,259.72x = 192,389.58 × 34,765.47
  4. Step 4: Simplify right side
    128,259.72x = 6,688,514,171.80
  5. Step 5: Solve for x
    x = 6,688,514,171.80/128,259.72
  6. Step 6: Final answer
    x = 52,148.21

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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.