Home / 115,396.20-172,802.70-75,738.60

Finding the Fourth Proportional to 115,396.20, 172,802.70 and 75,738.60

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Solution

The fourth proportional to 115,396.20, 172,802.70 and 75,738.60 is: 113,416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,396.20 : 172,802.70 = 75,738.60 : x
  2. Step 2: Convert to fraction form
    115,396.20/172,802.70 = 75,738.60/x
  3. Step 3: Cross multiply
    115,396.20x = 172,802.70 × 75,738.60
  4. Step 4: Simplify right side
    115,396.20x = 13,087,834,574.22
  5. Step 5: Solve for x
    x = 13,087,834,574.22/115,396.20
  6. Step 6: Final answer
    x = 113,416.51

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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.