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Finding the Fourth Proportional to 113,982, 157,290.48 and 66,234.96

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Solution

The fourth proportional to 113,982, 157,290.48 and 66,234.96 is: 91,401.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,982 : 157,290.48 = 66,234.96 : x
  2. Step 2: Convert to fraction form
    113,982/157,290.48 = 66,234.96/x
  3. Step 3: Cross multiply
    113,982x = 157,290.48 × 66,234.96
  4. Step 4: Simplify right side
    113,982x = 10,418,128,651.18
  5. Step 5: Solve for x
    x = 10,418,128,651.18/113,982
  6. Step 6: Final answer
    x = 91,401.53

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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.