Home / 128,625.82-177,504.98-71,266.90

Finding the Fourth Proportional to 128,625.82, 177,504.98 and 71,266.90

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Solution

The fourth proportional to 128,625.82, 177,504.98 and 71,266.90 is: 98,349.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,625.82 : 177,504.98 = 71,266.90 : x
  2. Step 2: Convert to fraction form
    128,625.82/177,504.98 = 71,266.90/x
  3. Step 3: Cross multiply
    128,625.82x = 177,504.98 × 71,266.90
  4. Step 4: Simplify right side
    128,625.82x = 12,650,229,659.16
  5. Step 5: Solve for x
    x = 12,650,229,659.16/128,625.82
  6. Step 6: Final answer
    x = 98,349.07

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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.