Home / 102,740.73-141,781.72-57,418.66

Finding the Fourth Proportional to 102,740.73, 141,781.72 and 57,418.66

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Solution

The fourth proportional to 102,740.73, 141,781.72 and 57,418.66 is: 79,237.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,740.73 : 141,781.72 = 57,418.66 : x
  2. Step 2: Convert to fraction form
    102,740.73/141,781.72 = 57,418.66/x
  3. Step 3: Cross multiply
    102,740.73x = 141,781.72 × 57,418.66
  4. Step 4: Simplify right side
    102,740.73x = 8,140,916,408.58
  5. Step 5: Solve for x
    x = 8,140,916,408.58/102,740.73
  6. Step 6: Final answer
    x = 79,237.48

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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.