Home / 103,697.68-155,639.24-53,131.20

Finding the Fourth Proportional to 103,697.68, 155,639.24 and 53,131.20

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Solution

The fourth proportional to 103,697.68, 155,639.24 and 53,131.20 is: 79,744.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,697.68 : 155,639.24 = 53,131.20 : x
  2. Step 2: Convert to fraction form
    103,697.68/155,639.24 = 53,131.20/x
  3. Step 3: Cross multiply
    103,697.68x = 155,639.24 × 53,131.20
  4. Step 4: Simplify right side
    103,697.68x = 8,269,299,322.63
  5. Step 5: Solve for x
    x = 8,269,299,322.63/103,697.68
  6. Step 6: Final answer
    x = 79,744.31

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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.