Home / 100,349.10-138,488.16-66,297.85

Finding the Fourth Proportional to 100,349.10, 138,488.16 and 66,297.85

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Solution

The fourth proportional to 100,349.10, 138,488.16 and 66,297.85 is: 91,495.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,349.10 : 138,488.16 = 66,297.85 : x
  2. Step 2: Convert to fraction form
    100,349.10/138,488.16 = 66,297.85/x
  3. Step 3: Cross multiply
    100,349.10x = 138,488.16 × 66,297.85
  4. Step 4: Simplify right side
    100,349.10x = 9,181,467,258.46
  5. Step 5: Solve for x
    x = 9,181,467,258.46/100,349.10
  6. Step 6: Final answer
    x = 91,495.26

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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.