Home / 100,244.64-138,275.04-64,481.28

Finding the Fourth Proportional to 100,244.64, 138,275.04 and 64,481.28

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Solution

The fourth proportional to 100,244.64, 138,275.04 and 64,481.28 is: 88,943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,244.64 : 138,275.04 = 64,481.28 : x
  2. Step 2: Convert to fraction form
    100,244.64/138,275.04 = 64,481.28/x
  3. Step 3: Cross multiply
    100,244.64x = 138,275.04 × 64,481.28
  4. Step 4: Simplify right side
    100,244.64x = 8,916,151,571.25
  5. Step 5: Solve for x
    x = 8,916,151,571.25/100,244.64
  6. Step 6: Final answer
    x = 88,943.92

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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.