Home / 108,479.12-149,573.64-86,951.60

Finding the Fourth Proportional to 108,479.12, 149,573.64 and 86,951.60

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Solution

The fourth proportional to 108,479.12, 149,573.64 and 86,951.60 is: 119,890.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,479.12 : 149,573.64 = 86,951.60 : x
  2. Step 2: Convert to fraction form
    108,479.12/149,573.64 = 86,951.60/x
  3. Step 3: Cross multiply
    108,479.12x = 149,573.64 × 86,951.60
  4. Step 4: Simplify right side
    108,479.12x = 13,005,667,315.82
  5. Step 5: Solve for x
    x = 13,005,667,315.82/108,479.12
  6. Step 6: Final answer
    x = 119,890.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.