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Finding the Fourth Proportional to 101,174.81, 151,855.36 and 51,289.81

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Solution

The fourth proportional to 101,174.81, 151,855.36 and 51,289.81 is: 76,981.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,174.81 : 151,855.36 = 51,289.81 : x
  2. Step 2: Convert to fraction form
    101,174.81/151,855.36 = 51,289.81/x
  3. Step 3: Cross multiply
    101,174.81x = 151,855.36 × 51,289.81
  4. Step 4: Simplify right side
    101,174.81x = 7,788,632,054.02
  5. Step 5: Solve for x
    x = 7,788,632,054.02/101,174.81
  6. Step 6: Final answer
    x = 76,981.93

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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.