Home / 156,782.23-216,361.11-85,163.65

Finding the Fourth Proportional to 156,782.23, 216,361.11 and 85,163.65

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Solution

The fourth proportional to 156,782.23, 216,361.11 and 85,163.65 is: 117,526.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,782.23 : 216,361.11 = 85,163.65 : x
  2. Step 2: Convert to fraction form
    156,782.23/216,361.11 = 85,163.65/x
  3. Step 3: Cross multiply
    156,782.23x = 216,361.11 × 85,163.65
  4. Step 4: Simplify right side
    156,782.23x = 18,426,101,845.65
  5. Step 5: Solve for x
    x = 18,426,101,845.65/156,782.23
  6. Step 6: Final answer
    x = 117,526.72

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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.