Home / 120,072.21-165,700.16-65,625.47

Finding the Fourth Proportional to 120,072.21, 165,700.16 and 65,625.47

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Solution

The fourth proportional to 120,072.21, 165,700.16 and 65,625.47 is: 90,563.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,072.21 : 165,700.16 = 65,625.47 : x
  2. Step 2: Convert to fraction form
    120,072.21/165,700.16 = 65,625.47/x
  3. Step 3: Cross multiply
    120,072.21x = 165,700.16 × 65,625.47
  4. Step 4: Simplify right side
    120,072.21x = 10,874,151,337.41
  5. Step 5: Solve for x
    x = 10,874,151,337.41/120,072.21
  6. Step 6: Final answer
    x = 90,563.43

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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.