Home / 99,721.80-149,664.30-98,944.20

Finding the Fourth Proportional to 99,721.80, 149,664.30 and 98,944.20

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Solution

The fourth proportional to 99,721.80, 149,664.30 and 98,944.20 is: 148,497.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,721.80 : 149,664.30 = 98,944.20 : x
  2. Step 2: Convert to fraction form
    99,721.80/149,664.30 = 98,944.20/x
  3. Step 3: Cross multiply
    99,721.80x = 149,664.30 × 98,944.20
  4. Step 4: Simplify right side
    99,721.80x = 14,808,414,432.06
  5. Step 5: Solve for x
    x = 14,808,414,432.06/99,721.80
  6. Step 6: Final answer
    x = 148,497.26

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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.