Home / 128,255.88-176,992.66-71,667.24

Finding the Fourth Proportional to 128,255.88, 176,992.66 and 71,667.24

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Solution

The fourth proportional to 128,255.88, 176,992.66 and 71,667.24 is: 98,900.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,255.88 : 176,992.66 = 71,667.24 : x
  2. Step 2: Convert to fraction form
    128,255.88/176,992.66 = 71,667.24/x
  3. Step 3: Cross multiply
    128,255.88x = 176,992.66 × 71,667.24
  4. Step 4: Simplify right side
    128,255.88x = 12,684,575,442.46
  5. Step 5: Solve for x
    x = 12,684,575,442.46/128,255.88
  6. Step 6: Final answer
    x = 98,900.54

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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.