Home / 235,511.12-325,002.26-128,078.87

Finding the Fourth Proportional to 235,511.12, 325,002.26 and 128,078.87

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Solution

The fourth proportional to 235,511.12, 325,002.26 and 128,078.87 is: 176,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,511.12 : 325,002.26 = 128,078.87 : x
  2. Step 2: Convert to fraction form
    235,511.12/325,002.26 = 128,078.87/x
  3. Step 3: Cross multiply
    235,511.12x = 325,002.26 × 128,078.87
  4. Step 4: Simplify right side
    235,511.12x = 41,625,920,903.43
  5. Step 5: Solve for x
    x = 41,625,920,903.43/235,511.12
  6. Step 6: Final answer
    x = 176,747.16

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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.