Home / 118,146.11-177,292.94-78,730.88

Finding the Fourth Proportional to 118,146.11, 177,292.94 and 78,730.88

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Solution

The fourth proportional to 118,146.11, 177,292.94 and 78,730.88 is: 118,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,146.11 : 177,292.94 = 78,730.88 : x
  2. Step 2: Convert to fraction form
    118,146.11/177,292.94 = 78,730.88/x
  3. Step 3: Cross multiply
    118,146.11x = 177,292.94 × 78,730.88
  4. Step 4: Simplify right side
    118,146.11x = 13,958,427,903.87
  5. Step 5: Solve for x
    x = 13,958,427,903.87/118,146.11
  6. Step 6: Final answer
    x = 118,145.48

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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.