Home / 102,690.28-141,714.66-57,969.64

Finding the Fourth Proportional to 102,690.28, 141,714.66 and 57,969.64

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Solution

The fourth proportional to 102,690.28, 141,714.66 and 57,969.64 is: 79,999.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,690.28 : 141,714.66 = 57,969.64 : x
  2. Step 2: Convert to fraction form
    102,690.28/141,714.66 = 57,969.64/x
  3. Step 3: Cross multiply
    102,690.28x = 141,714.66 × 57,969.64
  4. Step 4: Simplify right side
    102,690.28x = 8,215,147,822.92
  5. Step 5: Solve for x
    x = 8,215,147,822.92/102,690.28
  6. Step 6: Final answer
    x = 79,999.27

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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.