Home / 99,968.16-137,971.20-57,523.84

Finding the Fourth Proportional to 99,968.16, 137,971.20 and 57,523.84

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Solution

The fourth proportional to 99,968.16, 137,971.20 and 57,523.84 is: 79,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,968.16 : 137,971.20 = 57,523.84 : x
  2. Step 2: Convert to fraction form
    99,968.16/137,971.20 = 57,523.84/x
  3. Step 3: Cross multiply
    99,968.16x = 137,971.20 × 57,523.84
  4. Step 4: Simplify right side
    99,968.16x = 7,936,633,233.41
  5. Step 5: Solve for x
    x = 7,936,633,233.41/99,968.16
  6. Step 6: Final answer
    x = 79,391.61

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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.