Home / 100,276.17-138,381.12-54,953.73

Finding the Fourth Proportional to 100,276.17, 138,381.12 and 54,953.73

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Solution

The fourth proportional to 100,276.17, 138,381.12 and 54,953.73 is: 75,836.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,276.17 : 138,381.12 = 54,953.73 : x
  2. Step 2: Convert to fraction form
    100,276.17/138,381.12 = 54,953.73/x
  3. Step 3: Cross multiply
    100,276.17x = 138,381.12 × 54,953.73
  4. Step 4: Simplify right side
    100,276.17x = 7,604,558,705.58
  5. Step 5: Solve for x
    x = 7,604,558,705.58/100,276.17
  6. Step 6: Final answer
    x = 75,836.15

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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.