Home / 125,729.12-173,415.68-85,372.80

Finding the Fourth Proportional to 125,729.12, 173,415.68 and 85,372.80

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Solution

The fourth proportional to 125,729.12, 173,415.68 and 85,372.80 is: 117,753.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,729.12 : 173,415.68 = 85,372.80 : x
  2. Step 2: Convert to fraction form
    125,729.12/173,415.68 = 85,372.80/x
  3. Step 3: Cross multiply
    125,729.12x = 173,415.68 × 85,372.80
  4. Step 4: Simplify right side
    125,729.12x = 14,804,982,165.50
  5. Step 5: Solve for x
    x = 14,804,982,165.50/125,729.12
  6. Step 6: Final answer
    x = 117,753.01

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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.