Home / 155,012.47-213,915.33-87,027.75

Finding the Fourth Proportional to 155,012.47, 213,915.33 and 87,027.75

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Solution

The fourth proportional to 155,012.47, 213,915.33 and 87,027.75 is: 120,097.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,012.47 : 213,915.33 = 87,027.75 : x
  2. Step 2: Convert to fraction form
    155,012.47/213,915.33 = 87,027.75/x
  3. Step 3: Cross multiply
    155,012.47x = 213,915.33 × 87,027.75
  4. Step 4: Simplify right side
    155,012.47x = 18,616,569,860.41
  5. Step 5: Solve for x
    x = 18,616,569,860.41/155,012.47
  6. Step 6: Final answer
    x = 120,097.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.