Home / 185,511.70-278,421.15-85,825.30

Finding the Fourth Proportional to 185,511.70, 278,421.15 and 85,825.30

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Solution

The fourth proportional to 185,511.70, 278,421.15 and 85,825.30 is: 128,809.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,511.70 : 278,421.15 = 85,825.30 : x
  2. Step 2: Convert to fraction form
    185,511.70/278,421.15 = 85,825.30/x
  3. Step 3: Cross multiply
    185,511.70x = 278,421.15 × 85,825.30
  4. Step 4: Simplify right side
    185,511.70x = 23,895,578,725.10
  5. Step 5: Solve for x
    x = 23,895,578,725.10/185,511.70
  6. Step 6: Final answer
    x = 128,809.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.