Home / 260,054.01-390,082.64-80,137.22

Finding the Fourth Proportional to 260,054.01, 390,082.64 and 80,137.22

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Solution

The fourth proportional to 260,054.01, 390,082.64 and 80,137.22 is: 120,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,054.01 : 390,082.64 = 80,137.22 : x
  2. Step 2: Convert to fraction form
    260,054.01/390,082.64 = 80,137.22/x
  3. Step 3: Cross multiply
    260,054.01x = 390,082.64 × 80,137.22
  4. Step 4: Simplify right side
    260,054.01x = 31,260,135,988.76
  5. Step 5: Solve for x
    x = 31,260,135,988.76/260,054.01
  6. Step 6: Final answer
    x = 120,206.32

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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.