Home / 123,401.20-185,101.80-113,778.40

Finding the Fourth Proportional to 123,401.20, 185,101.80 and 113,778.40

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Solution

The fourth proportional to 123,401.20, 185,101.80 and 113,778.40 is: 170,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,401.20 : 185,101.80 = 113,778.40 : x
  2. Step 2: Convert to fraction form
    123,401.20/185,101.80 = 113,778.40/x
  3. Step 3: Cross multiply
    123,401.20x = 185,101.80 × 113,778.40
  4. Step 4: Simplify right side
    123,401.20x = 21,060,586,641.12
  5. Step 5: Solve for x
    x = 21,060,586,641.12/123,401.20
  6. Step 6: Final answer
    x = 170,667.60

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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.