Home / 128,722.44-193,028.94-69,542.16

Finding the Fourth Proportional to 128,722.44, 193,028.94 and 69,542.16

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Solution

The fourth proportional to 128,722.44, 193,028.94 and 69,542.16 is: 104,283.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,722.44 : 193,028.94 = 69,542.16 : x
  2. Step 2: Convert to fraction form
    128,722.44/193,028.94 = 69,542.16/x
  3. Step 3: Cross multiply
    128,722.44x = 193,028.94 × 69,542.16
  4. Step 4: Simplify right side
    128,722.44x = 13,423,649,430.11
  5. Step 5: Solve for x
    x = 13,423,649,430.11/128,722.44
  6. Step 6: Final answer
    x = 104,283.68

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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.