Home / 102,699.54-141,718.32-56,757.24

Finding the Fourth Proportional to 102,699.54, 141,718.32 and 56,757.24

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Solution

The fourth proportional to 102,699.54, 141,718.32 and 56,757.24 is: 78,321.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,699.54 : 141,718.32 = 56,757.24 : x
  2. Step 2: Convert to fraction form
    102,699.54/141,718.32 = 56,757.24/x
  3. Step 3: Cross multiply
    102,699.54x = 141,718.32 × 56,757.24
  4. Step 4: Simplify right side
    102,699.54x = 8,043,540,700.64
  5. Step 5: Solve for x
    x = 8,043,540,700.64/102,699.54
  6. Step 6: Final answer
    x = 78,321.10

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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.