Home / 102,669.05-141,680.36-57,345.71

Finding the Fourth Proportional to 102,669.05, 141,680.36 and 57,345.71

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Solution

The fourth proportional to 102,669.05, 141,680.36 and 57,345.71 is: 79,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,669.05 : 141,680.36 = 57,345.71 : x
  2. Step 2: Convert to fraction form
    102,669.05/141,680.36 = 57,345.71/x
  3. Step 3: Cross multiply
    102,669.05x = 141,680.36 × 57,345.71
  4. Step 4: Simplify right side
    102,669.05x = 8,124,760,272.22
  5. Step 5: Solve for x
    x = 8,124,760,272.22/102,669.05
  6. Step 6: Final answer
    x = 79,135.44

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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.