Home / 128,717.01-193,107.67-90,840.23

Finding the Fourth Proportional to 128,717.01, 193,107.67 and 90,840.23

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Solution

The fourth proportional to 128,717.01, 193,107.67 and 90,840.23 is: 136,283.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,717.01 : 193,107.67 = 90,840.23 : x
  2. Step 2: Convert to fraction form
    128,717.01/193,107.67 = 90,840.23/x
  3. Step 3: Cross multiply
    128,717.01x = 193,107.67 × 90,840.23
  4. Step 4: Simplify right side
    128,717.01x = 17,541,945,583.56
  5. Step 5: Solve for x
    x = 17,541,945,583.56/128,717.01
  6. Step 6: Final answer
    x = 136,283.04

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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.