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Finding the Fourth Proportional to 157,892.80, 236,450.40 and 74,689.60

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Solution

The fourth proportional to 157,892.80, 236,450.40 and 74,689.60 is: 111,850.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,892.80 : 236,450.40 = 74,689.60 : x
  2. Step 2: Convert to fraction form
    157,892.80/236,450.40 = 74,689.60/x
  3. Step 3: Cross multiply
    157,892.80x = 236,450.40 × 74,689.60
  4. Step 4: Simplify right side
    157,892.80x = 17,660,385,795.84
  5. Step 5: Solve for x
    x = 17,660,385,795.84/157,892.80
  6. Step 6: Final answer
    x = 111,850.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.