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Finding the Fourth Proportional to 124,379.79, 171,644.16 and 70,664.89

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Solution

The fourth proportional to 124,379.79, 171,644.16 and 70,664.89 is: 97,517.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,379.79 : 171,644.16 = 70,664.89 : x
  2. Step 2: Convert to fraction form
    124,379.79/171,644.16 = 70,664.89/x
  3. Step 3: Cross multiply
    124,379.79x = 171,644.16 × 70,664.89
  4. Step 4: Simplify right side
    124,379.79x = 12,129,215,685.54
  5. Step 5: Solve for x
    x = 12,129,215,685.54/124,379.79
  6. Step 6: Final answer
    x = 97,517.58

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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.