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Finding the Fourth Proportional to 125,035.78, 172,549.50 and 68,447.26

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Solution

The fourth proportional to 125,035.78, 172,549.50 and 68,447.26 is: 94,457.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,035.78 : 172,549.50 = 68,447.26 : x
  2. Step 2: Convert to fraction form
    125,035.78/172,549.50 = 68,447.26/x
  3. Step 3: Cross multiply
    125,035.78x = 172,549.50 × 68,447.26
  4. Step 4: Simplify right side
    125,035.78x = 11,810,540,489.37
  5. Step 5: Solve for x
    x = 11,810,540,489.37/125,035.78
  6. Step 6: Final answer
    x = 94,457.29

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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.