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Finding the Fourth Proportional to 146,465.40, 219,705.30 and 76,481.40

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Solution

The fourth proportional to 146,465.40, 219,705.30 and 76,481.40 is: 114,725.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,465.40 : 219,705.30 = 76,481.40 : x
  2. Step 2: Convert to fraction form
    146,465.40/219,705.30 = 76,481.40/x
  3. Step 3: Cross multiply
    146,465.40x = 219,705.30 × 76,481.40
  4. Step 4: Simplify right side
    146,465.40x = 16,803,368,931.42
  5. Step 5: Solve for x
    x = 16,803,368,931.42/146,465.40
  6. Step 6: Final answer
    x = 114,725.86

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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.