Home / 128,099.16-176,760.36-71,512.92

Finding the Fourth Proportional to 128,099.16, 176,760.36 and 71,512.92

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Solution

The fourth proportional to 128,099.16, 176,760.36 and 71,512.92 is: 98,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,099.16 : 176,760.36 = 71,512.92 : x
  2. Step 2: Convert to fraction form
    128,099.16/176,760.36 = 71,512.92/x
  3. Step 3: Cross multiply
    128,099.16x = 176,760.36 × 71,512.92
  4. Step 4: Simplify right side
    128,099.16x = 12,640,649,483.85
  5. Step 5: Solve for x
    x = 12,640,649,483.85/128,099.16
  6. Step 6: Final answer
    x = 98,678.63

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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.