Home / 128,249.03-176,980.02-71,660.39

Finding the Fourth Proportional to 128,249.03, 176,980.02 and 71,660.39

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Solution

The fourth proportional to 128,249.03, 176,980.02 and 71,660.39 is: 98,889.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,249.03 : 176,980.02 = 71,660.39 : x
  2. Step 2: Convert to fraction form
    128,249.03/176,980.02 = 71,660.39/x
  3. Step 3: Cross multiply
    128,249.03x = 176,980.02 × 71,660.39
  4. Step 4: Simplify right side
    128,249.03x = 12,682,457,255.41
  5. Step 5: Solve for x
    x = 12,682,457,255.41/128,249.03
  6. Step 6: Final answer
    x = 98,889.30

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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.