Home / 100,319,647.50-138,441,603.90-56,269,000.56

Finding the Fourth Proportional to 100,319,647.50, 138,441,603.90 and 56,269,000.56

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Solution

The fourth proportional to 100,319,647.50, 138,441,603.90 and 56,269,000.56 is: 77,651,495.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,319,647.50 : 138,441,603.90 = 56,269,000.56 : x
  2. Step 2: Convert to fraction form
    100,319,647.50/138,441,603.90 = 56,269,000.56/x
  3. Step 3: Cross multiply
    100,319,647.50x = 138,441,603.90 × 56,269,000.56
  4. Step 4: Simplify right side
    100,319,647.50x = 7,789,970,687,376,399
  5. Step 5: Solve for x
    x = 7,789,970,687,376,399/100,319,647.50
  6. Step 6: Final answer
    x = 77,651,495.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.