Home / 128,904.94-193,354.43-75,932.95

Finding the Fourth Proportional to 128,904.94, 193,354.43 and 75,932.95

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Solution

The fourth proportional to 128,904.94, 193,354.43 and 75,932.95 is: 113,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904.94 : 193,354.43 = 75,932.95 : x
  2. Step 2: Convert to fraction form
    128,904.94/193,354.43 = 75,932.95/x
  3. Step 3: Cross multiply
    128,904.94x = 193,354.43 × 75,932.95
  4. Step 4: Simplify right side
    128,904.94x = 14,681,972,265.47
  5. Step 5: Solve for x
    x = 14,681,972,265.47/128,904.94
  6. Step 6: Final answer
    x = 113,897.67

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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.