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Finding the Fourth Proportional to 125,364.09, 173,027.90 and 85,090.82

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Solution

The fourth proportional to 125,364.09, 173,027.90 and 85,090.82 is: 117,442.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,364.09 : 173,027.90 = 85,090.82 : x
  2. Step 2: Convert to fraction form
    125,364.09/173,027.90 = 85,090.82/x
  3. Step 3: Cross multiply
    125,364.09x = 173,027.90 × 85,090.82
  4. Step 4: Simplify right side
    125,364.09x = 14,723,086,539.17
  5. Step 5: Solve for x
    x = 14,723,086,539.17/125,364.09
  6. Step 6: Final answer
    x = 117,442.61

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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.