Home / 121,217.40-181,826.10-89,724.60

Finding the Fourth Proportional to 121,217.40, 181,826.10 and 89,724.60

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Solution

The fourth proportional to 121,217.40, 181,826.10 and 89,724.60 is: 134,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,217.40 : 181,826.10 = 89,724.60 : x
  2. Step 2: Convert to fraction form
    121,217.40/181,826.10 = 89,724.60/x
  3. Step 3: Cross multiply
    121,217.40x = 181,826.10 × 89,724.60
  4. Step 4: Simplify right side
    121,217.40x = 16,314,274,092.06
  5. Step 5: Solve for x
    x = 16,314,274,092.06/121,217.40
  6. Step 6: Final answer
    x = 134,586.90

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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.