Home / 156,622.60-235,006.80-81,827.20

Finding the Fourth Proportional to 156,622.60, 235,006.80 and 81,827.20

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Solution

The fourth proportional to 156,622.60, 235,006.80 and 81,827.20 is: 122,778.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,622.60 : 235,006.80 = 81,827.20 : x
  2. Step 2: Convert to fraction form
    156,622.60/235,006.80 = 81,827.20/x
  3. Step 3: Cross multiply
    156,622.60x = 235,006.80 × 81,827.20
  4. Step 4: Simplify right side
    156,622.60x = 19,229,948,424.96
  5. Step 5: Solve for x
    x = 19,229,948,424.96/156,622.60
  6. Step 6: Final answer
    x = 122,778.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.