Home / 103,555.06-155,314.96-28,657.65

Finding the Fourth Proportional to 103,555.06, 155,314.96 and 28,657.65

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Solution

The fourth proportional to 103,555.06, 155,314.96 and 28,657.65 is: 42,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,555.06 : 155,314.96 = 28,657.65 : x
  2. Step 2: Convert to fraction form
    103,555.06/155,314.96 = 28,657.65/x
  3. Step 3: Cross multiply
    103,555.06x = 155,314.96 × 28,657.65
  4. Step 4: Simplify right side
    103,555.06x = 4,450,962,435.43
  5. Step 5: Solve for x
    x = 4,450,962,435.43/103,555.06
  6. Step 6: Final answer
    x = 42,981.60

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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.