Home / 100,446.23-150,669.35-78,276.20

Finding the Fourth Proportional to 100,446.23, 150,669.35 and 78,276.20

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Solution

The fourth proportional to 100,446.23, 150,669.35 and 78,276.20 is: 117,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,446.23 : 150,669.35 = 78,276.20 : x
  2. Step 2: Convert to fraction form
    100,446.23/150,669.35 = 78,276.20/x
  3. Step 3: Cross multiply
    100,446.23x = 150,669.35 × 78,276.20
  4. Step 4: Simplify right side
    100,446.23x = 11,793,823,029.74
  5. Step 5: Solve for x
    x = 11,793,823,029.74/100,446.23
  6. Step 6: Final answer
    x = 117,414.30

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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.