Home / 134,028.80-201,043.20-128,123.90

Finding the Fourth Proportional to 134,028.80, 201,043.20 and 128,123.90

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Solution

The fourth proportional to 134,028.80, 201,043.20 and 128,123.90 is: 192,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,028.80 : 201,043.20 = 128,123.90 : x
  2. Step 2: Convert to fraction form
    134,028.80/201,043.20 = 128,123.90/x
  3. Step 3: Cross multiply
    134,028.80x = 201,043.20 × 128,123.90
  4. Step 4: Simplify right side
    134,028.80x = 25,758,438,852.48
  5. Step 5: Solve for x
    x = 25,758,438,852.48/134,028.80
  6. Step 6: Final answer
    x = 192,185.85

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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.