Home / 104,005.40-156,161.70-80,658.20

Finding the Fourth Proportional to 104,005.40, 156,161.70 and 80,658.20

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Solution

The fourth proportional to 104,005.40, 156,161.70 and 80,658.20 is: 121,106.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,005.40 : 156,161.70 = 80,658.20 : x
  2. Step 2: Convert to fraction form
    104,005.40/156,161.70 = 80,658.20/x
  3. Step 3: Cross multiply
    104,005.40x = 156,161.70 × 80,658.20
  4. Step 4: Simplify right side
    104,005.40x = 12,595,721,630.94
  5. Step 5: Solve for x
    x = 12,595,721,630.94/104,005.40
  6. Step 6: Final answer
    x = 121,106.42

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1.5x scale

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.