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Finding the Fourth Proportional to 146,709.99, 220,146.74 and 79,240.66

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Solution

The fourth proportional to 146,709.99, 220,146.74 and 79,240.66 is: 118,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,709.99 : 220,146.74 = 79,240.66 : x
  2. Step 2: Convert to fraction form
    146,709.99/220,146.74 = 79,240.66/x
  3. Step 3: Cross multiply
    146,709.99x = 220,146.74 × 79,240.66
  4. Step 4: Simplify right side
    146,709.99x = 17,444,572,853.43
  5. Step 5: Solve for x
    x = 17,444,572,853.43/146,709.99
  6. Step 6: Final answer
    x = 118,905.14

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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.