Home / 111,785.28-154,285.60-64,070.60

Finding the Fourth Proportional to 111,785.28, 154,285.60 and 64,070.60

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Solution

The fourth proportional to 111,785.28, 154,285.60 and 64,070.60 is: 88,429.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,785.28 : 154,285.60 = 64,070.60 : x
  2. Step 2: Convert to fraction form
    111,785.28/154,285.60 = 64,070.60/x
  3. Step 3: Cross multiply
    111,785.28x = 154,285.60 × 64,070.60
  4. Step 4: Simplify right side
    111,785.28x = 9,885,170,963.36
  5. Step 5: Solve for x
    x = 9,885,170,963.36/111,785.28
  6. Step 6: Final answer
    x = 88,429.99

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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.