Home / 235,576.15-325,085.55-128,146.30

Finding the Fourth Proportional to 235,576.15, 325,085.55 and 128,146.30

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Solution

The fourth proportional to 235,576.15, 325,085.55 and 128,146.30 is: 176,836.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,576.15 : 325,085.55 = 128,146.30 : x
  2. Step 2: Convert to fraction form
    235,576.15/325,085.55 = 128,146.30/x
  3. Step 3: Cross multiply
    235,576.15x = 325,085.55 × 128,146.30
  4. Step 4: Simplify right side
    235,576.15x = 41,658,511,672.13
  5. Step 5: Solve for x
    x = 41,658,511,672.13/235,576.15
  6. Step 6: Final answer
    x = 176,836.71

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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.