Home / 115,919.08-159,968.10-65,622.76

Finding the Fourth Proportional to 115,919.08, 159,968.10 and 65,622.76

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Solution

The fourth proportional to 115,919.08, 159,968.10 and 65,622.76 is: 90,559.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,919.08 : 159,968.10 = 65,622.76 : x
  2. Step 2: Convert to fraction form
    115,919.08/159,968.10 = 65,622.76/x
  3. Step 3: Cross multiply
    115,919.08x = 159,968.10 × 65,622.76
  4. Step 4: Simplify right side
    115,919.08x = 10,497,548,233.96
  5. Step 5: Solve for x
    x = 10,497,548,233.96/115,919.08
  6. Step 6: Final answer
    x = 90,559.28

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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.