Home / 78,480.09-106,853.60-78,230.97

Finding the Fourth Proportional to 78,480.09, 106,853.60 and 78,230.97

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Solution

The fourth proportional to 78,480.09, 106,853.60 and 78,230.97 is: 106,514.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,480.09 : 106,853.60 = 78,230.97 : x
  2. Step 2: Convert to fraction form
    78,480.09/106,853.60 = 78,230.97/x
  3. Step 3: Cross multiply
    78,480.09x = 106,853.60 × 78,230.97
  4. Step 4: Simplify right side
    78,480.09x = 8,359,260,384.84
  5. Step 5: Solve for x
    x = 8,359,260,384.84/78,480.09
  6. Step 6: Final answer
    x = 106,514.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.