Home / 74,129.02-111,237.82-68,099.20

Finding the Fourth Proportional to 74,129.02, 111,237.82 and 68,099.20

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Solution

The fourth proportional to 74,129.02, 111,237.82 and 68,099.20 is: 102,189.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,129.02 : 111,237.82 = 68,099.20 : x
  2. Step 2: Convert to fraction form
    74,129.02/111,237.82 = 68,099.20/x
  3. Step 3: Cross multiply
    74,129.02x = 111,237.82 × 68,099.20
  4. Step 4: Simplify right side
    74,129.02x = 7,575,206,551.74
  5. Step 5: Solve for x
    x = 7,575,206,551.74/74,129.02
  6. Step 6: Final answer
    x = 102,189.49

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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.