Home / 123,427.03-170,212.29-85,125.37

Finding the Fourth Proportional to 123,427.03, 170,212.29 and 85,125.37

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Solution

The fourth proportional to 123,427.03, 170,212.29 and 85,125.37 is: 117,392.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,427.03 : 170,212.29 = 85,125.37 : x
  2. Step 2: Convert to fraction form
    123,427.03/170,212.29 = 85,125.37/x
  3. Step 3: Cross multiply
    123,427.03x = 170,212.29 × 85,125.37
  4. Step 4: Simplify right side
    123,427.03x = 14,489,383,313.74
  5. Step 5: Solve for x
    x = 14,489,383,313.74/123,427.03
  6. Step 6: Final answer
    x = 117,392.31

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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.