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Finding the Fourth Proportional to 146,607.60, 219,911.40 and 129,986.40

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Solution

The fourth proportional to 146,607.60, 219,911.40 and 129,986.40 is: 194,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,607.60 : 219,911.40 = 129,986.40 : x
  2. Step 2: Convert to fraction form
    146,607.60/219,911.40 = 129,986.40/x
  3. Step 3: Cross multiply
    146,607.60x = 219,911.40 × 129,986.40
  4. Step 4: Simplify right side
    146,607.60x = 28,585,491,204.96
  5. Step 5: Solve for x
    x = 28,585,491,204.96/146,607.60
  6. Step 6: Final answer
    x = 194,979.60

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Similar ratio
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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.