Home / 190,891.46-285,901.14-91,121.88

Finding the Fourth Proportional to 190,891.46, 285,901.14 and 91,121.88

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Solution

The fourth proportional to 190,891.46, 285,901.14 and 91,121.88 is: 136,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,891.46 : 285,901.14 = 91,121.88 : x
  2. Step 2: Convert to fraction form
    190,891.46/285,901.14 = 91,121.88/x
  3. Step 3: Cross multiply
    190,891.46x = 285,901.14 × 91,121.88
  4. Step 4: Simplify right side
    190,891.46x = 26,051,849,370.94
  5. Step 5: Solve for x
    x = 26,051,849,370.94/190,891.46
  6. Step 6: Final answer
    x = 136,474.67

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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.