Home / 150,869.84-208,221.39-100,656.32

Finding the Fourth Proportional to 150,869.84, 208,221.39 and 100,656.32

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Solution

The fourth proportional to 150,869.84, 208,221.39 and 100,656.32 is: 138,919.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,869.84 : 208,221.39 = 100,656.32 : x
  2. Step 2: Convert to fraction form
    150,869.84/208,221.39 = 100,656.32/x
  3. Step 3: Cross multiply
    150,869.84x = 208,221.39 × 100,656.32
  4. Step 4: Simplify right side
    150,869.84x = 20,958,797,821.58
  5. Step 5: Solve for x
    x = 20,958,797,821.58/150,869.84
  6. Step 6: Final answer
    x = 138,919.74

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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.