Home / 102,872.15-141,956.89-57,542.36

Finding the Fourth Proportional to 102,872.15, 141,956.89 and 57,542.36

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Solution

The fourth proportional to 102,872.15, 141,956.89 and 57,542.36 is: 79,404.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,872.15 : 141,956.89 = 57,542.36 : x
  2. Step 2: Convert to fraction form
    102,872.15/141,956.89 = 57,542.36/x
  3. Step 3: Cross multiply
    102,872.15x = 141,956.89 × 57,542.36
  4. Step 4: Simplify right side
    102,872.15x = 8,168,533,615.22
  5. Step 5: Solve for x
    x = 8,168,533,615.22/102,872.15
  6. Step 6: Final answer
    x = 79,404.71

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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.