Home / 146,546,789.40-219,820,942.38-85,920,000.12

Finding the Fourth Proportional to 146,546,789.40, 219,820,942.38 and 85,920,000.12

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Solution

The fourth proportional to 146,546,789.40, 219,820,942.38 and 85,920,000.12 is: 128,880,444.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,546,789.40 : 219,820,942.38 = 85,920,000.12 : x
  2. Step 2: Convert to fraction form
    146,546,789.40/219,820,942.38 = 85,920,000.12/x
  3. Step 3: Cross multiply
    146,546,789.40x = 219,820,942.38 × 85,920,000.12
  4. Step 4: Simplify right side
    146,546,789.40x = 18,887,015,395,668,112
  5. Step 5: Solve for x
    x = 18,887,015,395,668,112/146,546,789.40
  6. Step 6: Final answer
    x = 128,880,444.76

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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.