Home / 99,928.96-149,863.36-82,355.20

Finding the Fourth Proportional to 99,928.96, 149,863.36 and 82,355.20

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Solution

The fourth proportional to 99,928.96, 149,863.36 and 82,355.20 is: 123,508.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,928.96 : 149,863.36 = 82,355.20 : x
  2. Step 2: Convert to fraction form
    99,928.96/149,863.36 = 82,355.20/x
  3. Step 3: Cross multiply
    99,928.96x = 149,863.36 × 82,355.20
  4. Step 4: Simplify right side
    99,928.96x = 12,342,026,985.47
  5. Step 5: Solve for x
    x = 12,342,026,985.47/99,928.96
  6. Step 6: Final answer
    x = 123,508.01

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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.