Home / 156,974.06-216,626.92-85,354.56

Finding the Fourth Proportional to 156,974.06, 216,626.92 and 85,354.56

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Solution

The fourth proportional to 156,974.06, 216,626.92 and 85,354.56 is: 117,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.06 : 216,626.92 = 85,354.56 : x
  2. Step 2: Convert to fraction form
    156,974.06/216,626.92 = 85,354.56/x
  3. Step 3: Cross multiply
    156,974.06x = 216,626.92 × 85,354.56
  4. Step 4: Simplify right side
    156,974.06x = 18,490,095,440.76
  5. Step 5: Solve for x
    x = 18,490,095,440.76/156,974.06
  6. Step 6: Final answer
    x = 117,790.77

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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.