Home / 156,815.06-216,405.68-85,195.67

Finding the Fourth Proportional to 156,815.06, 216,405.68 and 85,195.67

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Solution

The fourth proportional to 156,815.06, 216,405.68 and 85,195.67 is: 117,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,815.06 : 216,405.68 = 85,195.67 : x
  2. Step 2: Convert to fraction form
    156,815.06/216,405.68 = 85,195.67/x
  3. Step 3: Cross multiply
    156,815.06x = 216,405.68 × 85,195.67
  4. Step 4: Simplify right side
    156,815.06x = 18,436,825,391.40
  5. Step 5: Solve for x
    x = 18,436,825,391.40/156,815.06
  6. Step 6: Final answer
    x = 117,570.51

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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.