Home / 128,506.26-177,332.58-71,141.52

Finding the Fourth Proportional to 128,506.26, 177,332.58 and 71,141.52

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Solution

The fourth proportional to 128,506.26, 177,332.58 and 71,141.52 is: 98,171.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,506.26 : 177,332.58 = 71,141.52 : x
  2. Step 2: Convert to fraction form
    128,506.26/177,332.58 = 71,141.52/x
  3. Step 3: Cross multiply
    128,506.26x = 177,332.58 × 71,141.52
  4. Step 4: Simplify right side
    128,506.26x = 12,615,709,286.72
  5. Step 5: Solve for x
    x = 12,615,709,286.72/128,506.26
  6. Step 6: Final answer
    x = 98,171.94

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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.