Home / 128,263.16-177,002.88-71,674.54

Finding the Fourth Proportional to 128,263.16, 177,002.88 and 71,674.54

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Solution

The fourth proportional to 128,263.16, 177,002.88 and 71,674.54 is: 98,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,263.16 : 177,002.88 = 71,674.54 : x
  2. Step 2: Convert to fraction form
    128,263.16/177,002.88 = 71,674.54/x
  3. Step 3: Cross multiply
    128,263.16x = 177,002.88 × 71,674.54
  4. Step 4: Simplify right side
    128,263.16x = 12,686,600,002.68
  5. Step 5: Solve for x
    x = 12,686,600,002.68/128,263.16
  6. Step 6: Final answer
    x = 98,910.71

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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.