Home / 128,324.16-177,059.52-71,733.60

Finding the Fourth Proportional to 128,324.16, 177,059.52 and 71,733.60

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Solution

The fourth proportional to 128,324.16, 177,059.52 and 71,733.60 is: 98,976.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,324.16 : 177,059.52 = 71,733.60 : x
  2. Step 2: Convert to fraction form
    128,324.16/177,059.52 = 71,733.60/x
  3. Step 3: Cross multiply
    128,324.16x = 177,059.52 × 71,733.60
  4. Step 4: Simplify right side
    128,324.16x = 12,701,116,783.87
  5. Step 5: Solve for x
    x = 12,701,116,783.87/128,324.16
  6. Step 6: Final answer
    x = 98,976.82

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1.5x scale

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.