Home / 100,207.26-138,219.48-64,442.52

Finding the Fourth Proportional to 100,207.26, 138,219.48 and 64,442.52

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Solution

The fourth proportional to 100,207.26, 138,219.48 and 64,442.52 is: 88,887.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,207.26 : 138,219.48 = 64,442.52 : x
  2. Step 2: Convert to fraction form
    100,207.26/138,219.48 = 64,442.52/x
  3. Step 3: Cross multiply
    100,207.26x = 138,219.48 × 64,442.52
  4. Step 4: Simplify right side
    100,207.26x = 8,907,211,604.29
  5. Step 5: Solve for x
    x = 8,907,211,604.29/100,207.26
  6. Step 6: Final answer
    x = 88,887.89

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1.5x scale

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.