Home / 128,256.17-176,992.97-71,667.54

Finding the Fourth Proportional to 128,256.17, 176,992.97 and 71,667.54

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Solution

The fourth proportional to 128,256.17, 176,992.97 and 71,667.54 is: 98,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,256.17 : 176,992.97 = 71,667.54 : x
  2. Step 2: Convert to fraction form
    128,256.17/176,992.97 = 71,667.54/x
  3. Step 3: Cross multiply
    128,256.17x = 176,992.97 × 71,667.54
  4. Step 4: Simplify right side
    128,256.17x = 12,684,650,398.86
  5. Step 5: Solve for x
    x = 12,684,650,398.86/128,256.17
  6. Step 6: Final answer
    x = 98,900.90

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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.