Home / 109,679.36-164,269.35-85,838.22

Finding the Fourth Proportional to 109,679.36, 164,269.35 and 85,838.22

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Solution

The fourth proportional to 109,679.36, 164,269.35 and 85,838.22 is: 128,561.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,679.36 : 164,269.35 = 85,838.22 : x
  2. Step 2: Convert to fraction form
    109,679.36/164,269.35 = 85,838.22/x
  3. Step 3: Cross multiply
    109,679.36x = 164,269.35 × 85,838.22
  4. Step 4: Simplify right side
    109,679.36x = 14,100,588,604.56
  5. Step 5: Solve for x
    x = 14,100,588,604.56/109,679.36
  6. Step 6: Final answer
    x = 128,561.92

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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.