Home / 132,405.40-198,608.10-85,166.20

Finding the Fourth Proportional to 132,405.40, 198,608.10 and 85,166.20

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Solution

The fourth proportional to 132,405.40, 198,608.10 and 85,166.20 is: 127,749.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,405.40 : 198,608.10 = 85,166.20 : x
  2. Step 2: Convert to fraction form
    132,405.40/198,608.10 = 85,166.20/x
  3. Step 3: Cross multiply
    132,405.40x = 198,608.10 × 85,166.20
  4. Step 4: Simplify right side
    132,405.40x = 16,914,697,166.22
  5. Step 5: Solve for x
    x = 16,914,697,166.22/132,405.40
  6. Step 6: Final answer
    x = 127,749.30

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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.