Home / 103,896.10-155,455.35-68,904.10

Finding the Fourth Proportional to 103,896.10, 155,455.35 and 68,904.10

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Solution

The fourth proportional to 103,896.10, 155,455.35 and 68,904.10 is: 103,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,896.10 : 155,455.35 = 68,904.10 : x
  2. Step 2: Convert to fraction form
    103,896.10/155,455.35 = 68,904.10/x
  3. Step 3: Cross multiply
    103,896.10x = 155,455.35 × 68,904.10
  4. Step 4: Simplify right side
    103,896.10x = 10,711,510,981.94
  5. Step 5: Solve for x
    x = 10,711,510,981.94/103,896.10
  6. Step 6: Final answer
    x = 103,098.30

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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.