Home / 260,142.80-390,214.20-73,154.30

Finding the Fourth Proportional to 260,142.80, 390,214.20 and 73,154.30

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Solution

The fourth proportional to 260,142.80, 390,214.20 and 73,154.30 is: 109,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,142.80 : 390,214.20 = 73,154.30 : x
  2. Step 2: Convert to fraction form
    260,142.80/390,214.20 = 73,154.30/x
  3. Step 3: Cross multiply
    260,142.80x = 390,214.20 × 73,154.30
  4. Step 4: Simplify right side
    260,142.80x = 28,545,846,651.06
  5. Step 5: Solve for x
    x = 28,545,846,651.06/260,142.80
  6. Step 6: Final answer
    x = 109,731.45

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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.