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Finding the Fourth Proportional to 130,105.90, 179,491.74 and 101,375.67

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Solution

The fourth proportional to 130,105.90, 179,491.74 and 101,375.67 is: 139,856.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,105.90 : 179,491.74 = 101,375.67 : x
  2. Step 2: Convert to fraction form
    130,105.90/179,491.74 = 101,375.67/x
  3. Step 3: Cross multiply
    130,105.90x = 179,491.74 × 101,375.67
  4. Step 4: Simplify right side
    130,105.90x = 18,196,095,401.97
  5. Step 5: Solve for x
    x = 18,196,095,401.97/130,105.90
  6. Step 6: Final answer
    x = 139,856.04

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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.