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Finding the Fourth Proportional to 192,866.48, 289,345.91 and 80,484.18

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Solution

The fourth proportional to 192,866.48, 289,345.91 and 80,484.18 is: 120,745.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,866.48 : 289,345.91 = 80,484.18 : x
  2. Step 2: Convert to fraction form
    192,866.48/289,345.91 = 80,484.18/x
  3. Step 3: Cross multiply
    192,866.48x = 289,345.91 × 80,484.18
  4. Step 4: Simplify right side
    192,866.48x = 23,287,767,900.28
  5. Step 5: Solve for x
    x = 23,287,767,900.28/192,866.48
  6. Step 6: Final answer
    x = 120,745.55

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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.