Home / 128,926.56-193,059.36-76,373.76

Finding the Fourth Proportional to 128,926.56, 193,059.36 and 76,373.76

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Solution

The fourth proportional to 128,926.56, 193,059.36 and 76,373.76 is: 114,364.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,926.56 : 193,059.36 = 76,373.76 : x
  2. Step 2: Convert to fraction form
    128,926.56/193,059.36 = 76,373.76/x
  3. Step 3: Cross multiply
    128,926.56x = 193,059.36 × 76,373.76
  4. Step 4: Simplify right side
    128,926.56x = 14,744,669,226.39
  5. Step 5: Solve for x
    x = 14,744,669,226.39/128,926.56
  6. Step 6: Final answer
    x = 114,364.87

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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.