Home / 128,890.70-193,117.35-106,583.30

Finding the Fourth Proportional to 128,890.70, 193,117.35 and 106,583.30

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Solution

The fourth proportional to 128,890.70, 193,117.35 and 106,583.30 is: 159,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,890.70 : 193,117.35 = 106,583.30 : x
  2. Step 2: Convert to fraction form
    128,890.70/193,117.35 = 106,583.30/x
  3. Step 3: Cross multiply
    128,890.70x = 193,117.35 × 106,583.30
  4. Step 4: Simplify right side
    128,890.70x = 20,583,084,450.26
  5. Step 5: Solve for x
    x = 20,583,084,450.26/128,890.70
  6. Step 6: Final answer
    x = 159,694.10

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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.