Home / 100,623,841.85-138,861,372-57,166,162.49

Finding the Fourth Proportional to 100,623,841.85, 138,861,372 and 57,166,162.49

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Solution

The fourth proportional to 100,623,841.85, 138,861,372 and 57,166,162.49 is: 78,889,571.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,623,841.85 : 138,861,372 = 57,166,162.49 : x
  2. Step 2: Convert to fraction form
    100,623,841.85/138,861,372 = 57,166,162.49/x
  3. Step 3: Cross multiply
    100,623,841.85x = 138,861,372 × 57,166,162.49
  4. Step 4: Simplify right side
    100,623,841.85x = 7,938,171,754,642,029
  5. Step 5: Solve for x
    x = 7,938,171,754,642,029/100,623,841.85
  6. Step 6: Final answer
    x = 78,889,571.39

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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.