Home / 128,458.76-192,438.79-94,663.45

Finding the Fourth Proportional to 128,458.76, 192,438.79 and 94,663.45

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Solution

The fourth proportional to 128,458.76, 192,438.79 and 94,663.45 is: 141,811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,458.76 : 192,438.79 = 94,663.45 : x
  2. Step 2: Convert to fraction form
    128,458.76/192,438.79 = 94,663.45/x
  3. Step 3: Cross multiply
    128,458.76x = 192,438.79 × 94,663.45
  4. Step 4: Simplify right side
    128,458.76x = 18,216,919,775.23
  5. Step 5: Solve for x
    x = 18,216,919,775.23/128,458.76
  6. Step 6: Final answer
    x = 141,811.42

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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.