Home / 102,868.12-154,143.42-69,457.24

Finding the Fourth Proportional to 102,868.12, 154,143.42 and 69,457.24

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Solution

The fourth proportional to 102,868.12, 154,143.42 and 69,457.24 is: 104,078.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,868.12 : 154,143.42 = 69,457.24 : x
  2. Step 2: Convert to fraction form
    102,868.12/154,143.42 = 69,457.24/x
  3. Step 3: Cross multiply
    102,868.12x = 154,143.42 × 69,457.24
  4. Step 4: Simplify right side
    102,868.12x = 10,706,376,517.36
  5. Step 5: Solve for x
    x = 10,706,376,517.36/102,868.12
  6. Step 6: Final answer
    x = 104,078.66

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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.