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Finding the Fourth Proportional to 103,300.70, 155,034.09 and 53,395.38

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Solution

The fourth proportional to 103,300.70, 155,034.09 and 53,395.38 is: 80,136.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,300.70 : 155,034.09 = 53,395.38 : x
  2. Step 2: Convert to fraction form
    103,300.70/155,034.09 = 53,395.38/x
  3. Step 3: Cross multiply
    103,300.70x = 155,034.09 × 53,395.38
  4. Step 4: Simplify right side
    103,300.70x = 8,278,104,148.50
  5. Step 5: Solve for x
    x = 8,278,104,148.50/103,300.70
  6. Step 6: Final answer
    x = 80,136.00

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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.