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Finding the Fourth Proportional to 113,839, 157,108.96 and 66,089.50

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Solution

The fourth proportional to 113,839, 157,108.96 and 66,089.50 is: 91,209.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,839 : 157,108.96 = 66,089.50 : x
  2. Step 2: Convert to fraction form
    113,839/157,108.96 = 66,089.50/x
  3. Step 3: Cross multiply
    113,839x = 157,108.96 × 66,089.50
  4. Step 4: Simplify right side
    113,839x = 10,383,252,611.92
  5. Step 5: Solve for x
    x = 10,383,252,611.92/113,839
  6. Step 6: Final answer
    x = 91,209.98

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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.