Home / 156,941.60-216,580.77-85,321.67

Finding the Fourth Proportional to 156,941.60, 216,580.77 and 85,321.67

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Solution

The fourth proportional to 156,941.60, 216,580.77 and 85,321.67 is: 117,744.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,941.60 : 216,580.77 = 85,321.67 : x
  2. Step 2: Convert to fraction form
    156,941.60/216,580.77 = 85,321.67/x
  3. Step 3: Cross multiply
    156,941.60x = 216,580.77 × 85,321.67
  4. Step 4: Simplify right side
    156,941.60x = 18,479,031,903.38
  5. Step 5: Solve for x
    x = 18,479,031,903.38/156,941.60
  6. Step 6: Final answer
    x = 117,744.64

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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.