Home / 287,125.25-430,885.11-100,136.75

Finding the Fourth Proportional to 287,125.25, 430,885.11 and 100,136.75

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Solution

The fourth proportional to 287,125.25, 430,885.11 and 100,136.75 is: 150,273.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,125.25 : 430,885.11 = 100,136.75 : x
  2. Step 2: Convert to fraction form
    287,125.25/430,885.11 = 100,136.75/x
  3. Step 3: Cross multiply
    287,125.25x = 430,885.11 × 100,136.75
  4. Step 4: Simplify right side
    287,125.25x = 43,147,434,538.79
  5. Step 5: Solve for x
    x = 43,147,434,538.79/287,125.25
  6. Step 6: Final answer
    x = 150,273.91

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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.