Home / 115,839.40-174,130.30-107,621.80

Finding the Fourth Proportional to 115,839.40, 174,130.30 and 107,621.80

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Solution

The fourth proportional to 115,839.40, 174,130.30 and 107,621.80 is: 161,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,839.40 : 174,130.30 = 107,621.80 : x
  2. Step 2: Convert to fraction form
    115,839.40/174,130.30 = 107,621.80/x
  3. Step 3: Cross multiply
    115,839.40x = 174,130.30 × 107,621.80
  4. Step 4: Simplify right side
    115,839.40x = 18,740,216,320.54
  5. Step 5: Solve for x
    x = 18,740,216,320.54/115,839.40
  6. Step 6: Final answer
    x = 161,777.57

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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.