Home / 100,273.13-138,377.88-54,955.30

Finding the Fourth Proportional to 100,273.13, 138,377.88 and 54,955.30

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Solution

The fourth proportional to 100,273.13, 138,377.88 and 54,955.30 is: 75,838.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,273.13 : 138,377.88 = 54,955.30 : x
  2. Step 2: Convert to fraction form
    100,273.13/138,377.88 = 54,955.30/x
  3. Step 3: Cross multiply
    100,273.13x = 138,377.88 × 54,955.30
  4. Step 4: Simplify right side
    100,273.13x = 7,604,597,908.76
  5. Step 5: Solve for x
    x = 7,604,597,908.76/100,273.13
  6. Step 6: Final answer
    x = 75,838.84

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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.