Home / 128,975.00-177,994.22-71,620.92

Finding the Fourth Proportional to 128,975.00, 177,994.22 and 71,620.92

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Solution

The fourth proportional to 128,975.00, 177,994.22 and 71,620.92 is: 98,841.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,975.00 : 177,994.22 = 71,620.92 : x
  2. Step 2: Convert to fraction form
    128,975.00/177,994.22 = 71,620.92/x
  3. Step 3: Cross multiply
    128,975.00x = 177,994.22 × 71,620.92
  4. Step 4: Simplify right side
    128,975.00x = 12,748,109,432.98
  5. Step 5: Solve for x
    x = 12,748,109,432.98/128,975.00
  6. Step 6: Final answer
    x = 98,841.71

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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.