Home / 99,186.88-148,634.52-78,177.12

Finding the Fourth Proportional to 99,186.88, 148,634.52 and 78,177.12

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Solution

The fourth proportional to 99,186.88, 148,634.52 and 78,177.12 is: 117,150.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,186.88 : 148,634.52 = 78,177.12 : x
  2. Step 2: Convert to fraction form
    99,186.88/148,634.52 = 78,177.12/x
  3. Step 3: Cross multiply
    99,186.88x = 148,634.52 × 78,177.12
  4. Step 4: Simplify right side
    99,186.88x = 11,619,818,706.18
  5. Step 5: Solve for x
    x = 11,619,818,706.18/99,186.88
  6. Step 6: Final answer
    x = 117,150.76

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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.