Home / 103,796.10-155,366.10-74,271.60

Finding the Fourth Proportional to 103,796.10, 155,366.10 and 74,271.60

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Solution

The fourth proportional to 103,796.10, 155,366.10 and 74,271.60 is: 111,172.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,796.10 : 155,366.10 = 74,271.60 : x
  2. Step 2: Convert to fraction form
    103,796.10/155,366.10 = 74,271.60/x
  3. Step 3: Cross multiply
    103,796.10x = 155,366.10 × 74,271.60
  4. Step 4: Simplify right side
    103,796.10x = 11,539,288,832.76
  5. Step 5: Solve for x
    x = 11,539,288,832.76/103,796.10
  6. Step 6: Final answer
    x = 111,172.66

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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.