Home / 118,856.40-164,064.60-81,103.92

Finding the Fourth Proportional to 118,856.40, 164,064.60 and 81,103.92

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Solution

The fourth proportional to 118,856.40, 164,064.60 and 81,103.92 is: 111,952.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,856.40 : 164,064.60 = 81,103.92 : x
  2. Step 2: Convert to fraction form
    118,856.40/164,064.60 = 81,103.92/x
  3. Step 3: Cross multiply
    118,856.40x = 164,064.60 × 81,103.92
  4. Step 4: Simplify right side
    118,856.40x = 13,306,282,193.23
  5. Step 5: Solve for x
    x = 13,306,282,193.23/118,856.40
  6. Step 6: Final answer
    x = 111,952.59

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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.