Home / 128,255.67-176,992.27-71,667.04

Finding the Fourth Proportional to 128,255.67, 176,992.27 and 71,667.04

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Solution

The fourth proportional to 128,255.67, 176,992.27 and 71,667.04 is: 98,900.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,255.67 : 176,992.27 = 71,667.04 : x
  2. Step 2: Convert to fraction form
    128,255.67/176,992.27 = 71,667.04/x
  3. Step 3: Cross multiply
    128,255.67x = 176,992.27 × 71,667.04
  4. Step 4: Simplify right side
    128,255.67x = 12,684,512,093.78
  5. Step 5: Solve for x
    x = 12,684,512,093.78/128,255.67
  6. Step 6: Final answer
    x = 98,900.21

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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.