Home / 113,738.46-156,792.93-79,639.50

Finding the Fourth Proportional to 113,738.46, 156,792.93 and 79,639.50

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Solution

The fourth proportional to 113,738.46, 156,792.93 and 79,639.50 is: 109,786.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,738.46 : 156,792.93 = 79,639.50 : x
  2. Step 2: Convert to fraction form
    113,738.46/156,792.93 = 79,639.50/x
  3. Step 3: Cross multiply
    113,738.46x = 156,792.93 × 79,639.50
  4. Step 4: Simplify right side
    113,738.46x = 12,486,910,548.74
  5. Step 5: Solve for x
    x = 12,486,910,548.74/113,738.46
  6. Step 6: Final answer
    x = 109,786.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.