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Finding the Fourth Proportional to 113,934, 157,242.29 and 68,634.86

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Solution

The fourth proportional to 113,934, 157,242.29 and 68,634.86 is: 94,724.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,934 : 157,242.29 = 68,634.86 : x
  2. Step 2: Convert to fraction form
    113,934/157,242.29 = 68,634.86/x
  3. Step 3: Cross multiply
    113,934x = 157,242.29 × 68,634.86
  4. Step 4: Simplify right side
    113,934x = 10,792,301,430.84
  5. Step 5: Solve for x
    x = 10,792,301,430.84/113,934
  6. Step 6: Final answer
    x = 94,724.15

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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.