Home / 156,942.57-216,583.21-85,322.86

Finding the Fourth Proportional to 156,942.57, 216,583.21 and 85,322.86

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Solution

The fourth proportional to 156,942.57, 216,583.21 and 85,322.86 is: 117,746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,942.57 : 216,583.21 = 85,322.86 : x
  2. Step 2: Convert to fraction form
    156,942.57/216,583.21 = 85,322.86/x
  3. Step 3: Cross multiply
    156,942.57x = 216,583.21 × 85,322.86
  4. Step 4: Simplify right side
    156,942.57x = 18,479,498,905.18
  5. Step 5: Solve for x
    x = 18,479,498,905.18/156,942.57
  6. Step 6: Final answer
    x = 117,746.89

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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.