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Finding the Fourth Proportional to 104,231.80, 156,117.30 and 80,673.40

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Solution

The fourth proportional to 104,231.80, 156,117.30 and 80,673.40 is: 120,831.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,231.80 : 156,117.30 = 80,673.40 : x
  2. Step 2: Convert to fraction form
    104,231.80/156,117.30 = 80,673.40/x
  3. Step 3: Cross multiply
    104,231.80x = 156,117.30 × 80,673.40
  4. Step 4: Simplify right side
    104,231.80x = 12,594,513,389.82
  5. Step 5: Solve for x
    x = 12,594,513,389.82/104,231.80
  6. Step 6: Final answer
    x = 120,831.77

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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.