Home / 185,616.90-278,527.41-80,436.78

Finding the Fourth Proportional to 185,616.90, 278,527.41 and 80,436.78

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Solution

The fourth proportional to 185,616.90, 278,527.41 and 80,436.78 is: 120,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,616.90 : 278,527.41 = 80,436.78 : x
  2. Step 2: Convert to fraction form
    185,616.90/278,527.41 = 80,436.78/x
  3. Step 3: Cross multiply
    185,616.90x = 278,527.41 × 80,436.78
  4. Step 4: Simplify right side
    185,616.90x = 22,403,848,002.14
  5. Step 5: Solve for x
    x = 22,403,848,002.14/185,616.90
  6. Step 6: Final answer
    x = 120,699.40

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1.5x scale

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.