Home / 102,840.83-141,920.67-57,519.59

Finding the Fourth Proportional to 102,840.83, 141,920.67 and 57,519.59

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Solution

The fourth proportional to 102,840.83, 141,920.67 and 57,519.59 is: 79,377.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,840.83 : 141,920.67 = 57,519.59 : x
  2. Step 2: Convert to fraction form
    102,840.83/141,920.67 = 57,519.59/x
  3. Step 3: Cross multiply
    102,840.83x = 141,920.67 × 57,519.59
  4. Step 4: Simplify right side
    102,840.83x = 8,163,218,750.93
  5. Step 5: Solve for x
    x = 8,163,218,750.93/102,840.83
  6. Step 6: Final answer
    x = 79,377.22

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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.