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Finding the Fourth Proportional to 103,763.90, 155,287.45 and 62,240.70

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Solution

The fourth proportional to 103,763.90, 155,287.45 and 62,240.70 is: 93,146.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,763.90 : 155,287.45 = 62,240.70 : x
  2. Step 2: Convert to fraction form
    103,763.90/155,287.45 = 62,240.70/x
  3. Step 3: Cross multiply
    103,763.90x = 155,287.45 × 62,240.70
  4. Step 4: Simplify right side
    103,763.90x = 9,665,199,589.22
  5. Step 5: Solve for x
    x = 9,665,199,589.22/103,763.90
  6. Step 6: Final answer
    x = 93,146.07

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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.