Home / 128,741.68-177,660.84-70,597.60

Finding the Fourth Proportional to 128,741.68, 177,660.84 and 70,597.60

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Solution

The fourth proportional to 128,741.68, 177,660.84 and 70,597.60 is: 97,423.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,741.68 : 177,660.84 = 70,597.60 : x
  2. Step 2: Convert to fraction form
    128,741.68/177,660.84 = 70,597.60/x
  3. Step 3: Cross multiply
    128,741.68x = 177,660.84 × 70,597.60
  4. Step 4: Simplify right side
    128,741.68x = 12,542,428,917.98
  5. Step 5: Solve for x
    x = 12,542,428,917.98/128,741.68
  6. Step 6: Final answer
    x = 97,423.22

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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.