Home / 141,900.81-195,822.87-78,238.80

Finding the Fourth Proportional to 141,900.81, 195,822.87 and 78,238.80

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Solution

The fourth proportional to 141,900.81, 195,822.87 and 78,238.80 is: 107,969.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,900.81 : 195,822.87 = 78,238.80 : x
  2. Step 2: Convert to fraction form
    141,900.81/195,822.87 = 78,238.80/x
  3. Step 3: Cross multiply
    141,900.81x = 195,822.87 × 78,238.80
  4. Step 4: Simplify right side
    141,900.81x = 15,320,946,361.36
  5. Step 5: Solve for x
    x = 15,320,946,361.36/141,900.81
  6. Step 6: Final answer
    x = 107,969.41

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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.