Home / 102,788.14-141,871.32-66,915.66

Finding the Fourth Proportional to 102,788.14, 141,871.32 and 66,915.66

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Solution

The fourth proportional to 102,788.14, 141,871.32 and 66,915.66 is: 92,359.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,788.14 : 141,871.32 = 66,915.66 : x
  2. Step 2: Convert to fraction form
    102,788.14/141,871.32 = 66,915.66/x
  3. Step 3: Cross multiply
    102,788.14x = 141,871.32 × 66,915.66
  4. Step 4: Simplify right side
    102,788.14x = 9,493,413,012.87
  5. Step 5: Solve for x
    x = 9,493,413,012.87/102,788.14
  6. Step 6: Final answer
    x = 92,359.03

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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.