Home / 150,828.84-208,131.66-87,170.76

Finding the Fourth Proportional to 150,828.84, 208,131.66 and 87,170.76

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Solution

The fourth proportional to 150,828.84, 208,131.66 and 87,170.76 is: 120,288.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,828.84 : 208,131.66 = 87,170.76 : x
  2. Step 2: Convert to fraction form
    150,828.84/208,131.66 = 87,170.76/x
  3. Step 3: Cross multiply
    150,828.84x = 208,131.66 × 87,170.76
  4. Step 4: Simplify right side
    150,828.84x = 18,142,994,982.26
  5. Step 5: Solve for x
    x = 18,142,994,982.26/150,828.84
  6. Step 6: Final answer
    x = 120,288.63

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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.