Home / 260,124.80-390,187.20-73,136.30

Finding the Fourth Proportional to 260,124.80, 390,187.20 and 73,136.30

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Solution

The fourth proportional to 260,124.80, 390,187.20 and 73,136.30 is: 109,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,124.80 : 390,187.20 = 73,136.30 : x
  2. Step 2: Convert to fraction form
    260,124.80/390,187.20 = 73,136.30/x
  3. Step 3: Cross multiply
    260,124.80x = 390,187.20 × 73,136.30
  4. Step 4: Simplify right side
    260,124.80x = 28,536,848,115.36
  5. Step 5: Solve for x
    x = 28,536,848,115.36/260,124.80
  6. Step 6: Final answer
    x = 109,704.45

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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.