Home / 102,489.66-141,435.95-57,166.48

Finding the Fourth Proportional to 102,489.66, 141,435.95 and 57,166.48

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Solution

The fourth proportional to 102,489.66, 141,435.95 and 57,166.48 is: 78,889.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,489.66 : 141,435.95 = 57,166.48 : x
  2. Step 2: Convert to fraction form
    102,489.66/141,435.95 = 57,166.48/x
  3. Step 3: Cross multiply
    102,489.66x = 141,435.95 × 57,166.48
  4. Step 4: Simplify right side
    102,489.66x = 8,085,395,406.96
  5. Step 5: Solve for x
    x = 8,085,395,406.96/102,489.66
  6. Step 6: Final answer
    x = 78,889.86

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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.