Home / 156,785.58-216,230.04-105,789.60

Finding the Fourth Proportional to 156,785.58, 216,230.04 and 105,789.60

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Solution

The fourth proportional to 156,785.58, 216,230.04 and 105,789.60 is: 145,899.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,785.58 : 216,230.04 = 105,789.60 : x
  2. Step 2: Convert to fraction form
    156,785.58/216,230.04 = 105,789.60/x
  3. Step 3: Cross multiply
    156,785.58x = 216,230.04 × 105,789.60
  4. Step 4: Simplify right side
    156,785.58x = 22,874,889,439.58
  5. Step 5: Solve for x
    x = 22,874,889,439.58/156,785.58
  6. Step 6: Final answer
    x = 145,899.19

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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.