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Finding the Fourth Proportional to 189,378.33, 283,993.38 and 70,985.10

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Solution

The fourth proportional to 189,378.33, 283,993.38 and 70,985.10 is: 106,449.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,378.33 : 283,993.38 = 70,985.10 : x
  2. Step 2: Convert to fraction form
    189,378.33/283,993.38 = 70,985.10/x
  3. Step 3: Cross multiply
    189,378.33x = 283,993.38 × 70,985.10
  4. Step 4: Simplify right side
    189,378.33x = 20,159,298,478.64
  5. Step 5: Solve for x
    x = 20,159,298,478.64/189,378.33
  6. Step 6: Final answer
    x = 106,449.87

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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.