Home / 125,822.16-173,640.29-78,090.88

Finding the Fourth Proportional to 125,822.16, 173,640.29 and 78,090.88

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Solution

The fourth proportional to 125,822.16, 173,640.29 and 78,090.88 is: 107,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,822.16 : 173,640.29 = 78,090.88 : x
  2. Step 2: Convert to fraction form
    125,822.16/173,640.29 = 78,090.88/x
  3. Step 3: Cross multiply
    125,822.16x = 173,640.29 × 78,090.88
  4. Step 4: Simplify right side
    125,822.16x = 13,559,723,049.56
  5. Step 5: Solve for x
    x = 13,559,723,049.56/125,822.16
  6. Step 6: Final answer
    x = 107,768.96

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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.