Home / 105,172.44-145,137.24-57,425.76

Finding the Fourth Proportional to 105,172.44, 145,137.24 and 57,425.76

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Solution

The fourth proportional to 105,172.44, 145,137.24 and 57,425.76 is: 79,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,172.44 : 145,137.24 = 57,425.76 : x
  2. Step 2: Convert to fraction form
    105,172.44/145,137.24 = 57,425.76/x
  3. Step 3: Cross multiply
    105,172.44x = 145,137.24 × 57,425.76
  4. Step 4: Simplify right side
    105,172.44x = 8,334,616,311.30
  5. Step 5: Solve for x
    x = 8,334,616,311.30/105,172.44
  6. Step 6: Final answer
    x = 79,247.15

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1.5x scale

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.