Home / 190,200.42-285,353.96-76,428.14

Finding the Fourth Proportional to 190,200.42, 285,353.96 and 76,428.14

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Solution

The fourth proportional to 190,200.42, 285,353.96 and 76,428.14 is: 114,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,200.42 : 285,353.96 = 76,428.14 : x
  2. Step 2: Convert to fraction form
    190,200.42/285,353.96 = 76,428.14/x
  3. Step 3: Cross multiply
    190,200.42x = 285,353.96 × 76,428.14
  4. Step 4: Simplify right side
    190,200.42x = 21,809,070,595.52
  5. Step 5: Solve for x
    x = 21,809,070,595.52/190,200.42
  6. Step 6: Final answer
    x = 114,663.63

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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.