Home / 103,619.85-155,506.58-68,547.85

Finding the Fourth Proportional to 103,619.85, 155,506.58 and 68,547.85

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Solution

The fourth proportional to 103,619.85, 155,506.58 and 68,547.85 is: 102,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.85 : 155,506.58 = 68,547.85 : x
  2. Step 2: Convert to fraction form
    103,619.85/155,506.58 = 68,547.85/x
  3. Step 3: Cross multiply
    103,619.85x = 155,506.58 × 68,547.85
  4. Step 4: Simplify right side
    103,619.85x = 10,659,641,719.85
  5. Step 5: Solve for x
    x = 10,659,641,719.85/103,619.85
  6. Step 6: Final answer
    x = 102,872.58

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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.