Home / 215,996.81-324,139.82-89,637.17

Finding the Fourth Proportional to 215,996.81, 324,139.82 and 89,637.17

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Solution

The fourth proportional to 215,996.81, 324,139.82 and 89,637.17 is: 134,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,996.81 : 324,139.82 = 89,637.17 : x
  2. Step 2: Convert to fraction form
    215,996.81/324,139.82 = 89,637.17/x
  3. Step 3: Cross multiply
    215,996.81x = 324,139.82 × 89,637.17
  4. Step 4: Simplify right side
    215,996.81x = 29,054,974,080.22
  5. Step 5: Solve for x
    x = 29,054,974,080.22/215,996.81
  6. Step 6: Final answer
    x = 134,515.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.