Home / 105,247.24-157,734.78-78,744.04

Finding the Fourth Proportional to 105,247.24, 157,734.78 and 78,744.04

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Solution

The fourth proportional to 105,247.24, 157,734.78 and 78,744.04 is: 118,014.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,247.24 : 157,734.78 = 78,744.04 : x
  2. Step 2: Convert to fraction form
    105,247.24/157,734.78 = 78,744.04/x
  3. Step 3: Cross multiply
    105,247.24x = 157,734.78 × 78,744.04
  4. Step 4: Simplify right side
    105,247.24x = 12,420,673,825.71
  5. Step 5: Solve for x
    x = 12,420,673,825.71/105,247.24
  6. Step 6: Final answer
    x = 118,014.25

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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.