Home / 100,528.28-138,732.72-55,210.44

Finding the Fourth Proportional to 100,528.28, 138,732.72 and 55,210.44

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Solution

The fourth proportional to 100,528.28, 138,732.72 and 55,210.44 is: 76,192.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,528.28 : 138,732.72 = 55,210.44 : x
  2. Step 2: Convert to fraction form
    100,528.28/138,732.72 = 55,210.44/x
  3. Step 3: Cross multiply
    100,528.28x = 138,732.72 × 55,210.44
  4. Step 4: Simplify right side
    100,528.28x = 7,659,494,826.81
  5. Step 5: Solve for x
    x = 7,659,494,826.81/100,528.28
  6. Step 6: Final answer
    x = 76,192.44

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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.