Home / 203,660,187.40-305,490,281.10-74,272,018.60

Finding the Fourth Proportional to 203,660,187.40, 305,490,281.10 and 74,272,018.60

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Solution

The fourth proportional to 203,660,187.40, 305,490,281.10 and 74,272,018.60 is: 111,408,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,660,187.40 : 305,490,281.10 = 74,272,018.60 : x
  2. Step 2: Convert to fraction form
    203,660,187.40/305,490,281.10 = 74,272,018.60/x
  3. Step 3: Cross multiply
    203,660,187.40x = 305,490,281.10 × 74,272,018.60
  4. Step 4: Simplify right side
    203,660,187.40x = 22,689,379,839,978,428
  5. Step 5: Solve for x
    x = 22,689,379,839,978,428/203,660,187.40
  6. Step 6: Final answer
    x = 111,408,027.90

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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.