Home / 103,624.85-155,346.15-70,236.65

Finding the Fourth Proportional to 103,624.85, 155,346.15 and 70,236.65

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Solution

The fourth proportional to 103,624.85, 155,346.15 and 70,236.65 is: 105,293.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,624.85 : 155,346.15 = 70,236.65 : x
  2. Step 2: Convert to fraction form
    103,624.85/155,346.15 = 70,236.65/x
  3. Step 3: Cross multiply
    103,624.85x = 155,346.15 × 70,236.65
  4. Step 4: Simplify right side
    103,624.85x = 10,910,993,166.40
  5. Step 5: Solve for x
    x = 10,910,993,166.40/103,624.85
  6. Step 6: Final answer
    x = 105,293.21

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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.