Home / 100,876.05-139,203.62-57,853.32

Finding the Fourth Proportional to 100,876.05, 139,203.62 and 57,853.32

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Solution

The fourth proportional to 100,876.05, 139,203.62 and 57,853.32 is: 79,834.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,876.05 : 139,203.62 = 57,853.32 : x
  2. Step 2: Convert to fraction form
    100,876.05/139,203.62 = 57,853.32/x
  3. Step 3: Cross multiply
    100,876.05x = 139,203.62 × 57,853.32
  4. Step 4: Simplify right side
    100,876.05x = 8,053,390,587.73
  5. Step 5: Solve for x
    x = 8,053,390,587.73/100,876.05
  6. Step 6: Final answer
    x = 79,834.52

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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.