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Finding the Fourth Proportional to 99,386.58, 149,081.08 and 55,099.82

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Solution

The fourth proportional to 99,386.58, 149,081.08 and 55,099.82 is: 82,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,386.58 : 149,081.08 = 55,099.82 : x
  2. Step 2: Convert to fraction form
    99,386.58/149,081.08 = 55,099.82/x
  3. Step 3: Cross multiply
    99,386.58x = 149,081.08 × 55,099.82
  4. Step 4: Simplify right side
    99,386.58x = 8,214,340,673.41
  5. Step 5: Solve for x
    x = 8,214,340,673.41/99,386.58
  6. Step 6: Final answer
    x = 82,650.40

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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.