Home / 405,136.08-607,704.39-105,615.90

Finding the Fourth Proportional to 405,136.08, 607,704.39 and 105,615.90

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Solution

The fourth proportional to 405,136.08, 607,704.39 and 105,615.90 is: 158,423.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,136.08 : 607,704.39 = 105,615.90 : x
  2. Step 2: Convert to fraction form
    405,136.08/607,704.39 = 105,615.90/x
  3. Step 3: Cross multiply
    405,136.08x = 607,704.39 × 105,615.90
  4. Step 4: Simplify right side
    405,136.08x = 64,183,246,083.80
  5. Step 5: Solve for x
    x = 64,183,246,083.80/405,136.08
  6. Step 6: Final answer
    x = 158,423.92

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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.