Home / 156,783.10-216,360.89-85,163.12

Finding the Fourth Proportional to 156,783.10, 216,360.89 and 85,163.12

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Solution

The fourth proportional to 156,783.10, 216,360.89 and 85,163.12 is: 117,525.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,783.10 : 216,360.89 = 85,163.12 : x
  2. Step 2: Convert to fraction form
    156,783.10/216,360.89 = 85,163.12/x
  3. Step 3: Cross multiply
    156,783.10x = 216,360.89 × 85,163.12
  4. Step 4: Simplify right side
    156,783.10x = 18,425,968,438.38
  5. Step 5: Solve for x
    x = 18,425,968,438.38/156,783.10
  6. Step 6: Final answer
    x = 117,525.22

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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.