Home / 128,934.42-177,926.70-71,570.42

Finding the Fourth Proportional to 128,934.42, 177,926.70 and 71,570.42

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Solution

The fourth proportional to 128,934.42, 177,926.70 and 71,570.42 is: 98,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,934.42 : 177,926.70 = 71,570.42 : x
  2. Step 2: Convert to fraction form
    128,934.42/177,926.70 = 71,570.42/x
  3. Step 3: Cross multiply
    128,934.42x = 177,926.70 × 71,570.42
  4. Step 4: Simplify right side
    128,934.42x = 12,734,288,290.36
  5. Step 5: Solve for x
    x = 12,734,288,290.36/128,934.42
  6. Step 6: Final answer
    x = 98,765.62

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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.