Home / 156,382.11-215,804.99-88,396.71

Finding the Fourth Proportional to 156,382.11, 215,804.99 and 88,396.71

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Solution

The fourth proportional to 156,382.11, 215,804.99 and 88,396.71 is: 121,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,382.11 : 215,804.99 = 88,396.71 : x
  2. Step 2: Convert to fraction form
    156,382.11/215,804.99 = 88,396.71/x
  3. Step 3: Cross multiply
    156,382.11x = 215,804.99 × 88,396.71
  4. Step 4: Simplify right side
    156,382.11x = 19,076,449,866.33
  5. Step 5: Solve for x
    x = 19,076,449,866.33/156,382.11
  6. Step 6: Final answer
    x = 121,986.14

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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.