Home / 230,551.21-318,160.02-128,576.77

Finding the Fourth Proportional to 230,551.21, 318,160.02 and 128,576.77

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Solution

The fourth proportional to 230,551.21, 318,160.02 and 128,576.77 is: 177,435.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,551.21 : 318,160.02 = 128,576.77 : x
  2. Step 2: Convert to fraction form
    230,551.21/318,160.02 = 128,576.77/x
  3. Step 3: Cross multiply
    230,551.21x = 318,160.02 × 128,576.77
  4. Step 4: Simplify right side
    230,551.21x = 40,907,987,714.74
  5. Step 5: Solve for x
    x = 40,907,987,714.74/230,551.21
  6. Step 6: Final answer
    x = 177,435.58

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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.