Home / 103,629.40-155,328.90-56,915.80

Finding the Fourth Proportional to 103,629.40, 155,328.90 and 56,915.80

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Solution

The fourth proportional to 103,629.40, 155,328.90 and 56,915.80 is: 85,310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,629.40 : 155,328.90 = 56,915.80 : x
  2. Step 2: Convert to fraction form
    103,629.40/155,328.90 = 56,915.80/x
  3. Step 3: Cross multiply
    103,629.40x = 155,328.90 × 56,915.80
  4. Step 4: Simplify right side
    103,629.40x = 8,840,668,606.62
  5. Step 5: Solve for x
    x = 8,840,668,606.62/103,629.40
  6. Step 6: Final answer
    x = 85,310.43

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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.