Home / 156,647.30-216,172.55-85,026.70

Finding the Fourth Proportional to 156,647.30, 216,172.55 and 85,026.70

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Solution

The fourth proportional to 156,647.30, 216,172.55 and 85,026.70 is: 117,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,647.30 : 216,172.55 = 85,026.70 : x
  2. Step 2: Convert to fraction form
    156,647.30/216,172.55 = 85,026.70/x
  3. Step 3: Cross multiply
    156,647.30x = 216,172.55 × 85,026.70
  4. Step 4: Simplify right side
    156,647.30x = 18,380,437,051.09
  5. Step 5: Solve for x
    x = 18,380,437,051.09/156,647.30
  6. Step 6: Final answer
    x = 117,336.44

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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.