Home / 103,589.56-155,135.10-70,208.36

Finding the Fourth Proportional to 103,589.56, 155,135.10 and 70,208.36

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Solution

The fourth proportional to 103,589.56, 155,135.10 and 70,208.36 is: 105,143.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,589.56 : 155,135.10 = 70,208.36 : x
  2. Step 2: Convert to fraction form
    103,589.56/155,135.10 = 70,208.36/x
  3. Step 3: Cross multiply
    103,589.56x = 155,135.10 × 70,208.36
  4. Step 4: Simplify right side
    103,589.56x = 10,891,780,949.44
  5. Step 5: Solve for x
    x = 10,891,780,949.44/103,589.56
  6. Step 6: Final answer
    x = 105,143.62

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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.