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Finding the Fourth Proportional to 111,775.96, 154,172.75 and 75,903.69

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Solution

The fourth proportional to 111,775.96, 154,172.75 and 75,903.69 is: 104,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,775.96 : 154,172.75 = 75,903.69 : x
  2. Step 2: Convert to fraction form
    111,775.96/154,172.75 = 75,903.69/x
  3. Step 3: Cross multiply
    111,775.96x = 154,172.75 × 75,903.69
  4. Step 4: Simplify right side
    111,775.96x = 11,702,280,821.08
  5. Step 5: Solve for x
    x = 11,702,280,821.08/111,775.96
  6. Step 6: Final answer
    x = 104,694.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.