Home / 156,836.32-216,433.69-85,216.60

Finding the Fourth Proportional to 156,836.32, 216,433.69 and 85,216.60

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Solution

The fourth proportional to 156,836.32, 216,433.69 and 85,216.60 is: 117,598.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,836.32 : 216,433.69 = 85,216.60 : x
  2. Step 2: Convert to fraction form
    156,836.32/216,433.69 = 85,216.60/x
  3. Step 3: Cross multiply
    156,836.32x = 216,433.69 × 85,216.60
  4. Step 4: Simplify right side
    156,836.32x = 18,443,743,187.25
  5. Step 5: Solve for x
    x = 18,443,743,187.25/156,836.32
  6. Step 6: Final answer
    x = 117,598.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.