Home / 100,048,372.80-138,071,069.55-55,394,344.50

Finding the Fourth Proportional to 100,048,372.80, 138,071,069.55 and 55,394,344.50

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Solution

The fourth proportional to 100,048,372.80, 138,071,069.55 and 55,394,344.50 is: 76,446,584.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,048,372.80 : 138,071,069.55 = 55,394,344.50 : x
  2. Step 2: Convert to fraction form
    100,048,372.80/138,071,069.55 = 55,394,344.50/x
  3. Step 3: Cross multiply
    100,048,372.80x = 138,071,069.55 × 55,394,344.50
  4. Step 4: Simplify right side
    100,048,372.80x = 7,648,356,392,136,161
  5. Step 5: Solve for x
    x = 7,648,356,392,136,161/100,048,372.80
  6. Step 6: Final answer
    x = 76,446,584.57

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1.5x scale

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.