Home / 102,915.62-154,214.00-71,386.97

Finding the Fourth Proportional to 102,915.62, 154,214.00 and 71,386.97

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Solution

The fourth proportional to 102,915.62, 154,214.00 and 71,386.97 is: 106,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,915.62 : 154,214.00 = 71,386.97 : x
  2. Step 2: Convert to fraction form
    102,915.62/154,214.00 = 71,386.97/x
  3. Step 3: Cross multiply
    102,915.62x = 154,214.00 × 71,386.97
  4. Step 4: Simplify right side
    102,915.62x = 11,008,870,220.18
  5. Step 5: Solve for x
    x = 11,008,870,220.18/102,915.62
  6. Step 6: Final answer
    x = 106,969.87

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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.