Home / 102,872.90-141,977.68-57,553.40

Finding the Fourth Proportional to 102,872.90, 141,977.68 and 57,553.40

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Solution

The fourth proportional to 102,872.90, 141,977.68 and 57,553.40 is: 79,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,872.90 : 141,977.68 = 57,553.40 : x
  2. Step 2: Convert to fraction form
    102,872.90/141,977.68 = 57,553.40/x
  3. Step 3: Cross multiply
    102,872.90x = 141,977.68 × 57,553.40
  4. Step 4: Simplify right side
    102,872.90x = 8,171,298,208.11
  5. Step 5: Solve for x
    x = 8,171,298,208.11/102,872.90
  6. Step 6: Final answer
    x = 79,431.01

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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.