Home / 100,147.82-138,203.70-57,706.25

Finding the Fourth Proportional to 100,147.82, 138,203.70 and 57,706.25

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Solution

The fourth proportional to 100,147.82, 138,203.70 and 57,706.25 is: 79,634.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,147.82 : 138,203.70 = 57,706.25 : x
  2. Step 2: Convert to fraction form
    100,147.82/138,203.70 = 57,706.25/x
  3. Step 3: Cross multiply
    100,147.82x = 138,203.70 × 57,706.25
  4. Step 4: Simplify right side
    100,147.82x = 7,975,217,263.13
  5. Step 5: Solve for x
    x = 7,975,217,263.13/100,147.82
  6. Step 6: Final answer
    x = 79,634.46

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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.