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Finding the Fourth Proportional to 124,609.36, 171,960.42 and 68,020.78

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Solution

The fourth proportional to 124,609.36, 171,960.42 and 68,020.78 is: 93,868.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,609.36 : 171,960.42 = 68,020.78 : x
  2. Step 2: Convert to fraction form
    124,609.36/171,960.42 = 68,020.78/x
  3. Step 3: Cross multiply
    124,609.36x = 171,960.42 × 68,020.78
  4. Step 4: Simplify right side
    124,609.36x = 11,696,881,897.53
  5. Step 5: Solve for x
    x = 11,696,881,897.53/124,609.36
  6. Step 6: Final answer
    x = 93,868.41

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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.