Home / 128,442.22-192,615.54-44,178.72

Finding the Fourth Proportional to 128,442.22, 192,615.54 and 44,178.72

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Solution

The fourth proportional to 128,442.22, 192,615.54 and 44,178.72 is: 66,251.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,442.22 : 192,615.54 = 44,178.72 : x
  2. Step 2: Convert to fraction form
    128,442.22/192,615.54 = 44,178.72/x
  3. Step 3: Cross multiply
    128,442.22x = 192,615.54 × 44,178.72
  4. Step 4: Simplify right side
    128,442.22x = 8,509,508,009.31
  5. Step 5: Solve for x
    x = 8,509,508,009.31/128,442.22
  6. Step 6: Final answer
    x = 66,251.64

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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.