Home / 92,089.20-138,133.16-75,638.64

Finding the Fourth Proportional to 92,089.20, 138,133.16 and 75,638.64

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Solution

The fourth proportional to 92,089.20, 138,133.16 and 75,638.64 is: 113,457.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,089.20 : 138,133.16 = 75,638.64 : x
  2. Step 2: Convert to fraction form
    92,089.20/138,133.16 = 75,638.64/x
  3. Step 3: Cross multiply
    92,089.20x = 138,133.16 × 75,638.64
  4. Step 4: Simplify right side
    92,089.20x = 10,448,204,361.30
  5. Step 5: Solve for x
    x = 10,448,204,361.30/92,089.20
  6. Step 6: Final answer
    x = 113,457.43

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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.