Home / 98,211.84-147,571.20-81,623.04

Finding the Fourth Proportional to 98,211.84, 147,571.20 and 81,623.04

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Solution

The fourth proportional to 98,211.84, 147,571.20 and 81,623.04 is: 122,645.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,211.84 : 147,571.20 = 81,623.04 : x
  2. Step 2: Convert to fraction form
    98,211.84/147,571.20 = 81,623.04/x
  3. Step 3: Cross multiply
    98,211.84x = 147,571.20 × 81,623.04
  4. Step 4: Simplify right side
    98,211.84x = 12,045,209,960.45
  5. Step 5: Solve for x
    x = 12,045,209,960.45/98,211.84
  6. Step 6: Final answer
    x = 122,645.19

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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.