Home / 100,276.34-138,382.44-54,953.36

Finding the Fourth Proportional to 100,276.34, 138,382.44 and 54,953.36

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Solution

The fourth proportional to 100,276.34, 138,382.44 and 54,953.36 is: 75,836.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,276.34 : 138,382.44 = 54,953.36 : x
  2. Step 2: Convert to fraction form
    100,276.34/138,382.44 = 54,953.36/x
  3. Step 3: Cross multiply
    100,276.34x = 138,382.44 × 54,953.36
  4. Step 4: Simplify right side
    100,276.34x = 7,604,579,351.09
  5. Step 5: Solve for x
    x = 7,604,579,351.09/100,276.34
  6. Step 6: Final answer
    x = 75,836.23

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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.