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Finding the Fourth Proportional to 190,452.90, 285,715.46 and 76,609.42

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Solution

The fourth proportional to 190,452.90, 285,715.46 and 76,609.42 is: 114,928.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,452.90 : 285,715.46 = 76,609.42 : x
  2. Step 2: Convert to fraction form
    190,452.90/285,715.46 = 76,609.42/x
  3. Step 3: Cross multiply
    190,452.90x = 285,715.46 × 76,609.42
  4. Step 4: Simplify right side
    190,452.90x = 21,888,495,675.63
  5. Step 5: Solve for x
    x = 21,888,495,675.63/190,452.90
  6. Step 6: Final answer
    x = 114,928.66

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1.5x scale

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.