Home / 100,240.34-138,337.47-54,918.41

Finding the Fourth Proportional to 100,240.34, 138,337.47 and 54,918.41

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Solution

The fourth proportional to 100,240.34, 138,337.47 and 54,918.41 is: 75,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,240.34 : 138,337.47 = 54,918.41 : x
  2. Step 2: Convert to fraction form
    100,240.34/138,337.47 = 54,918.41/x
  3. Step 3: Cross multiply
    100,240.34x = 138,337.47 × 54,918.41
  4. Step 4: Simplify right side
    100,240.34x = 7,597,273,204.14
  5. Step 5: Solve for x
    x = 7,597,273,204.14/100,240.34
  6. Step 6: Final answer
    x = 75,790.58

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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.