Home / 260,112.20-390,168.30-73,123.70

Finding the Fourth Proportional to 260,112.20, 390,168.30 and 73,123.70

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Solution

The fourth proportional to 260,112.20, 390,168.30 and 73,123.70 is: 109,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,112.20 : 390,168.30 = 73,123.70 : x
  2. Step 2: Convert to fraction form
    260,112.20/390,168.30 = 73,123.70/x
  3. Step 3: Cross multiply
    260,112.20x = 390,168.30 × 73,123.70
  4. Step 4: Simplify right side
    260,112.20x = 28,530,549,718.71
  5. Step 5: Solve for x
    x = 28,530,549,718.71/260,112.20
  6. Step 6: Final answer
    x = 109,685.55

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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.