Home / 123,878.20-185,903.70-79,612.60

Finding the Fourth Proportional to 123,878.20, 185,903.70 and 79,612.60

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Solution

The fourth proportional to 123,878.20, 185,903.70 and 79,612.60 is: 119,474.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,878.20 : 185,903.70 = 79,612.60 : x
  2. Step 2: Convert to fraction form
    123,878.20/185,903.70 = 79,612.60/x
  3. Step 3: Cross multiply
    123,878.20x = 185,903.70 × 79,612.60
  4. Step 4: Simplify right side
    123,878.20x = 14,800,276,906.62
  5. Step 5: Solve for x
    x = 14,800,276,906.62/123,878.20
  6. Step 6: Final answer
    x = 119,474.43

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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.