Home / 100,206.75-138,218.79-64,442.01

Finding the Fourth Proportional to 100,206.75, 138,218.79 and 64,442.01

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Solution

The fourth proportional to 100,206.75, 138,218.79 and 64,442.01 is: 88,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,206.75 : 138,218.79 = 64,442.01 : x
  2. Step 2: Convert to fraction form
    100,206.75/138,218.79 = 64,442.01/x
  3. Step 3: Cross multiply
    100,206.75x = 138,218.79 × 64,442.01
  4. Step 4: Simplify right side
    100,206.75x = 8,907,096,647.37
  5. Step 5: Solve for x
    x = 8,907,096,647.37/100,206.75
  6. Step 6: Final answer
    x = 88,887.19

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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.