Home / 109,586.46-164,130.57-85,745.43

Finding the Fourth Proportional to 109,586.46, 164,130.57 and 85,745.43

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Solution

The fourth proportional to 109,586.46, 164,130.57 and 85,745.43 is: 128,423.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,586.46 : 164,130.57 = 85,745.43 : x
  2. Step 2: Convert to fraction form
    109,586.46/164,130.57 = 85,745.43/x
  3. Step 3: Cross multiply
    109,586.46x = 164,130.57 × 85,745.43
  4. Step 4: Simplify right side
    109,586.46x = 14,073,446,300.80
  5. Step 5: Solve for x
    x = 14,073,446,300.80/109,586.46
  6. Step 6: Final answer
    x = 128,423.22

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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.