Home / 156,973.20-216,622.51-85,353.40

Finding the Fourth Proportional to 156,973.20, 216,622.51 and 85,353.40

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Solution

The fourth proportional to 156,973.20, 216,622.51 and 85,353.40 is: 117,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,973.20 : 216,622.51 = 85,353.40 : x
  2. Step 2: Convert to fraction form
    156,973.20/216,622.51 = 85,353.40/x
  3. Step 3: Cross multiply
    156,973.20x = 216,622.51 × 85,353.40
  4. Step 4: Simplify right side
    156,973.20x = 18,489,467,745.03
  5. Step 5: Solve for x
    x = 18,489,467,745.03/156,973.20
  6. Step 6: Final answer
    x = 117,787.42

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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.