Home / 111,228,121.16-166,938,234.78-77,173,381.88

Finding the Fourth Proportional to 111,228,121.16, 166,938,234.78 and 77,173,381.88

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Solution

The fourth proportional to 111,228,121.16, 166,938,234.78 and 77,173,381.88 is: 115,826,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,228,121.16 : 166,938,234.78 = 77,173,381.88 : x
  2. Step 2: Convert to fraction form
    111,228,121.16/166,938,234.78 = 77,173,381.88/x
  3. Step 3: Cross multiply
    111,228,121.16x = 166,938,234.78 × 77,173,381.88
  4. Step 4: Simplify right side
    111,228,121.16x = 12,883,188,143,050,038
  5. Step 5: Solve for x
    x = 12,883,188,143,050,038/111,228,121.16
  6. Step 6: Final answer
    x = 115,826,717.28

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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.