Home / 128,952.77-177,946.83-71,588.75

Finding the Fourth Proportional to 128,952.77, 177,946.83 and 71,588.75

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Solution

The fourth proportional to 128,952.77, 177,946.83 and 71,588.75 is: 98,788.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952.77 : 177,946.83 = 71,588.75 : x
  2. Step 2: Convert to fraction form
    128,952.77/177,946.83 = 71,588.75/x
  3. Step 3: Cross multiply
    128,952.77x = 177,946.83 × 71,588.75
  4. Step 4: Simplify right side
    128,952.77x = 12,738,990,236.43
  5. Step 5: Solve for x
    x = 12,738,990,236.43/128,952.77
  6. Step 6: Final answer
    x = 98,788.03

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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.