Home / 192,867.12-289,319.70-66,490.74

Finding the Fourth Proportional to 192,867.12, 289,319.70 and 66,490.74

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Solution

The fourth proportional to 192,867.12, 289,319.70 and 66,490.74 is: 99,742.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,867.12 : 289,319.70 = 66,490.74 : x
  2. Step 2: Convert to fraction form
    192,867.12/289,319.70 = 66,490.74/x
  3. Step 3: Cross multiply
    192,867.12x = 289,319.70 × 66,490.74
  4. Step 4: Simplify right side
    192,867.12x = 19,237,080,949.58
  5. Step 5: Solve for x
    x = 19,237,080,949.58/192,867.12
  6. Step 6: Final answer
    x = 99,742.67

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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.