Home / 141,977.76-195,933-77,448.09

Finding the Fourth Proportional to 141,977.76, 195,933 and 77,448.09

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Solution

The fourth proportional to 141,977.76, 195,933 and 77,448.09 is: 106,880.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,977.76 : 195,933 = 77,448.09 : x
  2. Step 2: Convert to fraction form
    141,977.76/195,933 = 77,448.09/x
  3. Step 3: Cross multiply
    141,977.76x = 195,933 × 77,448.09
  4. Step 4: Simplify right side
    141,977.76x = 15,174,635,638.31
  5. Step 5: Solve for x
    x = 15,174,635,638.31/141,977.76
  6. Step 6: Final answer
    x = 106,880.37

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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.