Home / 156,961.40-216,607.20-85,341.70

Finding the Fourth Proportional to 156,961.40, 216,607.20 and 85,341.70

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Solution

The fourth proportional to 156,961.40, 216,607.20 and 85,341.70 is: 117,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,961.40 : 216,607.20 = 85,341.70 : x
  2. Step 2: Convert to fraction form
    156,961.40/216,607.20 = 85,341.70/x
  3. Step 3: Cross multiply
    156,961.40x = 216,607.20 × 85,341.70
  4. Step 4: Simplify right side
    156,961.40x = 18,485,626,680.24
  5. Step 5: Solve for x
    x = 18,485,626,680.24/156,961.40
  6. Step 6: Final answer
    x = 117,771.80

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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.