Home / 128,682.20-177,573.48-72,092.36

Finding the Fourth Proportional to 128,682.20, 177,573.48 and 72,092.36

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Solution

The fourth proportional to 128,682.20, 177,573.48 and 72,092.36 is: 99,483.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,682.20 : 177,573.48 = 72,092.36 : x
  2. Step 2: Convert to fraction form
    128,682.20/177,573.48 = 72,092.36/x
  3. Step 3: Cross multiply
    128,682.20x = 177,573.48 × 72,092.36
  4. Step 4: Simplify right side
    128,682.20x = 12,801,691,246.61
  5. Step 5: Solve for x
    x = 12,801,691,246.61/128,682.20
  6. Step 6: Final answer
    x = 99,483.00

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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.