Home / 100,979.33-139,354.29-57,962.52

Finding the Fourth Proportional to 100,979.33, 139,354.29 and 57,962.52

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Solution

The fourth proportional to 100,979.33, 139,354.29 and 57,962.52 is: 79,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,979.33 : 139,354.29 = 57,962.52 : x
  2. Step 2: Convert to fraction form
    100,979.33/139,354.29 = 57,962.52/x
  3. Step 3: Cross multiply
    100,979.33x = 139,354.29 × 57,962.52
  4. Step 4: Simplify right side
    100,979.33x = 8,077,325,821.21
  5. Step 5: Solve for x
    x = 8,077,325,821.21/100,979.33
  6. Step 6: Final answer
    x = 79,989.90

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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.