Home / 104,866.20-156,953.70-81,365.40

Finding the Fourth Proportional to 104,866.20, 156,953.70 and 81,365.40

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Solution

The fourth proportional to 104,866.20, 156,953.70 and 81,365.40 is: 121,779.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,866.20 : 156,953.70 = 81,365.40 : x
  2. Step 2: Convert to fraction form
    104,866.20/156,953.70 = 81,365.40/x
  3. Step 3: Cross multiply
    104,866.20x = 156,953.70 × 81,365.40
  4. Step 4: Simplify right side
    104,866.20x = 12,770,600,581.98
  5. Step 5: Solve for x
    x = 12,770,600,581.98/104,866.20
  6. Step 6: Final answer
    x = 121,779.95

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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.