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Finding the Fourth Proportional to 158,236.84, 218,604 and 103,918.06

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Solution

The fourth proportional to 158,236.84, 218,604 and 103,918.06 is: 143,562.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,236.84 : 218,604 = 103,918.06 : x
  2. Step 2: Convert to fraction form
    158,236.84/218,604 = 103,918.06/x
  3. Step 3: Cross multiply
    158,236.84x = 218,604 × 103,918.06
  4. Step 4: Simplify right side
    158,236.84x = 22,716,903,588.24
  5. Step 5: Solve for x
    x = 22,716,903,588.24/158,236.84
  6. Step 6: Final answer
    x = 143,562.67

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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.