Home / 118,930.68-164,099.52-80,719.74

Finding the Fourth Proportional to 118,930.68, 164,099.52 and 80,719.74

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Solution

The fourth proportional to 118,930.68, 164,099.52 and 80,719.74 is: 111,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,930.68 : 164,099.52 = 80,719.74 : x
  2. Step 2: Convert to fraction form
    118,930.68/164,099.52 = 80,719.74/x
  3. Step 3: Cross multiply
    118,930.68x = 164,099.52 × 80,719.74
  4. Step 4: Simplify right side
    118,930.68x = 13,246,070,588.52
  5. Step 5: Solve for x
    x = 13,246,070,588.52/118,930.68
  6. Step 6: Final answer
    x = 111,376.40

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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.