Home / 142,805.40-213,997.50-79,538.37

Finding the Fourth Proportional to 142,805.40, 213,997.50 and 79,538.37

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Solution

The fourth proportional to 142,805.40, 213,997.50 and 79,538.37 is: 119,190.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,805.40 : 213,997.50 = 79,538.37 : x
  2. Step 2: Convert to fraction form
    142,805.40/213,997.50 = 79,538.37/x
  3. Step 3: Cross multiply
    142,805.40x = 213,997.50 × 79,538.37
  4. Step 4: Simplify right side
    142,805.40x = 17,021,012,334.08
  5. Step 5: Solve for x
    x = 17,021,012,334.08/142,805.40
  6. Step 6: Final answer
    x = 119,190.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.