Home / 207,395,018.84-311,138,857.02-78,003,750.98

Finding the Fourth Proportional to 207,395,018.84, 311,138,857.02 and 78,003,750.98

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Solution

The fourth proportional to 207,395,018.84, 311,138,857.02 and 78,003,750.98 is: 117,023,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,395,018.84 : 311,138,857.02 = 78,003,750.98 : x
  2. Step 2: Convert to fraction form
    207,395,018.84/311,138,857.02 = 78,003,750.98/x
  3. Step 3: Cross multiply
    207,395,018.84x = 311,138,857.02 × 78,003,750.98
  4. Step 4: Simplify right side
    207,395,018.84x = 24,269,997,923,189,904
  5. Step 5: Solve for x
    x = 24,269,997,923,189,904/207,395,018.84
  6. Step 6: Final answer
    x = 117,023,051.27

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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.