Home / 286,131.12-429,176.80-86,452.54

Finding the Fourth Proportional to 286,131.12, 429,176.80 and 86,452.54

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Solution

The fourth proportional to 286,131.12, 429,176.80 and 86,452.54 is: 129,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,131.12 : 429,176.80 = 86,452.54 : x
  2. Step 2: Convert to fraction form
    286,131.12/429,176.80 = 86,452.54/x
  3. Step 3: Cross multiply
    286,131.12x = 429,176.80 × 86,452.54
  4. Step 4: Simplify right side
    286,131.12x = 37,103,424,469.07
  5. Step 5: Solve for x
    x = 37,103,424,469.07/286,131.12
  6. Step 6: Final answer
    x = 129,672.80

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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.