Home / 100,325,692.74-138,450,618.09-55,672,581.36

Finding the Fourth Proportional to 100,325,692.74, 138,450,618.09 and 55,672,581.36

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Solution

The fourth proportional to 100,325,692.74, 138,450,618.09 and 55,672,581.36 is: 76,828,807.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,325,692.74 : 138,450,618.09 = 55,672,581.36 : x
  2. Step 2: Convert to fraction form
    100,325,692.74/138,450,618.09 = 55,672,581.36/x
  3. Step 3: Cross multiply
    100,325,692.74x = 138,450,618.09 × 55,672,581.36
  4. Step 4: Simplify right side
    100,325,692.74x = 7,707,903,299,957,813
  5. Step 5: Solve for x
    x = 7,707,903,299,957,813/100,325,692.74
  6. Step 6: Final answer
    x = 76,828,807.15

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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.