Home / 128,823.85-192,930.33-102,083.86

Finding the Fourth Proportional to 128,823.85, 192,930.33 and 102,083.86

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Solution

The fourth proportional to 128,823.85, 192,930.33 and 102,083.86 is: 152,883.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,823.85 : 192,930.33 = 102,083.86 : x
  2. Step 2: Convert to fraction form
    128,823.85/192,930.33 = 102,083.86/x
  3. Step 3: Cross multiply
    128,823.85x = 192,930.33 × 102,083.86
  4. Step 4: Simplify right side
    128,823.85x = 19,695,071,832.82
  5. Step 5: Solve for x
    x = 19,695,071,832.82/128,823.85
  6. Step 6: Final answer
    x = 152,883.74

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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.