Home / 99,580.32-149,392.62-43,429.50

Finding the Fourth Proportional to 99,580.32, 149,392.62 and 43,429.50

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Solution

The fourth proportional to 99,580.32, 149,392.62 and 43,429.50 is: 65,153.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,580.32 : 149,392.62 = 43,429.50 : x
  2. Step 2: Convert to fraction form
    99,580.32/149,392.62 = 43,429.50/x
  3. Step 3: Cross multiply
    99,580.32x = 149,392.62 × 43,429.50
  4. Step 4: Simplify right side
    99,580.32x = 6,488,046,790.29
  5. Step 5: Solve for x
    x = 6,488,046,790.29/99,580.32
  6. Step 6: Final answer
    x = 65,153.91

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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.