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Finding the Fourth Proportional to 105,816.25, 146,025.99 and 58,070.38

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Solution

The fourth proportional to 105,816.25, 146,025.99 and 58,070.38 is: 80,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,816.25 : 146,025.99 = 58,070.38 : x
  2. Step 2: Convert to fraction form
    105,816.25/146,025.99 = 58,070.38/x
  3. Step 3: Cross multiply
    105,816.25x = 146,025.99 × 58,070.38
  4. Step 4: Simplify right side
    105,816.25x = 8,479,784,729.18
  5. Step 5: Solve for x
    x = 8,479,784,729.18/105,816.25
  6. Step 6: Final answer
    x = 80,136.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.