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Finding the Fourth Proportional to 145,814.40, 218,770.20 and 130,136.40

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Solution

The fourth proportional to 145,814.40, 218,770.20 and 130,136.40 is: 195,247.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,814.40 : 218,770.20 = 130,136.40 : x
  2. Step 2: Convert to fraction form
    145,814.40/218,770.20 = 130,136.40/x
  3. Step 3: Cross multiply
    145,814.40x = 218,770.20 × 130,136.40
  4. Step 4: Simplify right side
    145,814.40x = 28,469,966,255.28
  5. Step 5: Solve for x
    x = 28,469,966,255.28/145,814.40
  6. Step 6: Final answer
    x = 195,247.97

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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.