Home / 112,905.89-155,788.07-66,957.02

Finding the Fourth Proportional to 112,905.89, 155,788.07 and 66,957.02

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Solution

The fourth proportional to 112,905.89, 155,788.07 and 66,957.02 is: 92,387.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,905.89 : 155,788.07 = 66,957.02 : x
  2. Step 2: Convert to fraction form
    112,905.89/155,788.07 = 66,957.02/x
  3. Step 3: Cross multiply
    112,905.89x = 155,788.07 × 66,957.02
  4. Step 4: Simplify right side
    112,905.89x = 10,431,104,918.75
  5. Step 5: Solve for x
    x = 10,431,104,918.75/112,905.89
  6. Step 6: Final answer
    x = 92,387.61

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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.