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Finding the Fourth Proportional to 231,038, 318,833.40 and 125,054

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Solution

The fourth proportional to 231,038, 318,833.40 and 125,054 is: 172,575.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,038 : 318,833.40 = 125,054 : x
  2. Step 2: Convert to fraction form
    231,038/318,833.40 = 125,054/x
  3. Step 3: Cross multiply
    231,038x = 318,833.40 × 125,054
  4. Step 4: Simplify right side
    231,038x = 39,871,392,003.60
  5. Step 5: Solve for x
    x = 39,871,392,003.60/231,038
  6. Step 6: Final answer
    x = 172,575.04

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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.