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Finding the Fourth Proportional to 124,970.56, 172,463.64 and 68,381.92

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Solution

The fourth proportional to 124,970.56, 172,463.64 and 68,381.92 is: 94,369.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,970.56 : 172,463.64 = 68,381.92 : x
  2. Step 2: Convert to fraction form
    124,970.56/172,463.64 = 68,381.92/x
  3. Step 3: Cross multiply
    124,970.56x = 172,463.64 × 68,381.92
  4. Step 4: Simplify right side
    124,970.56x = 11,793,394,833.39
  5. Step 5: Solve for x
    x = 11,793,394,833.39/124,970.56
  6. Step 6: Final answer
    x = 94,369.38

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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.