Home / 156,930.40-216,566.09-85,311.96

Finding the Fourth Proportional to 156,930.40, 216,566.09 and 85,311.96

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Solution

The fourth proportional to 156,930.40, 216,566.09 and 85,311.96 is: 117,731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.40 : 216,566.09 = 85,311.96 : x
  2. Step 2: Convert to fraction form
    156,930.40/216,566.09 = 85,311.96/x
  3. Step 3: Cross multiply
    156,930.40x = 216,566.09 × 85,311.96
  4. Step 4: Simplify right side
    156,930.40x = 18,475,677,607.44
  5. Step 5: Solve for x
    x = 18,475,677,607.44/156,930.40
  6. Step 6: Final answer
    x = 117,731.67

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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.