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Finding the Fourth Proportional to 101,145.70, 151,548.45 and 80,004.70

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Solution

The fourth proportional to 101,145.70, 151,548.45 and 80,004.70 is: 119,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,145.70 : 151,548.45 = 80,004.70 : x
  2. Step 2: Convert to fraction form
    101,145.70/151,548.45 = 80,004.70/x
  3. Step 3: Cross multiply
    101,145.70x = 151,548.45 × 80,004.70
  4. Step 4: Simplify right side
    101,145.70x = 12,124,588,277.72
  5. Step 5: Solve for x
    x = 12,124,588,277.72/101,145.70
  6. Step 6: Final answer
    x = 119,872.50

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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.