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Finding the Fourth Proportional to 128,323.22, 192,484.92 and 34,828.97

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Solution

The fourth proportional to 128,323.22, 192,484.92 and 34,828.97 is: 52,243.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,323.22 : 192,484.92 = 34,828.97 : x
  2. Step 2: Convert to fraction form
    128,323.22/192,484.92 = 34,828.97/x
  3. Step 3: Cross multiply
    128,323.22x = 192,484.92 × 34,828.97
  4. Step 4: Simplify right side
    128,323.22x = 6,704,050,541.71
  5. Step 5: Solve for x
    x = 6,704,050,541.71/128,323.22
  6. Step 6: Final answer
    x = 52,243.47

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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.