Home / 128,601.24-177,465.68-71,238.24

Finding the Fourth Proportional to 128,601.24, 177,465.68 and 71,238.24

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Solution

The fourth proportional to 128,601.24, 177,465.68 and 71,238.24 is: 98,306.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,601.24 : 177,465.68 = 71,238.24 : x
  2. Step 2: Convert to fraction form
    128,601.24/177,465.68 = 71,238.24/x
  3. Step 3: Cross multiply
    128,601.24x = 177,465.68 × 71,238.24
  4. Step 4: Simplify right side
    128,601.24x = 12,642,342,703.60
  5. Step 5: Solve for x
    x = 12,642,342,703.60/128,601.24
  6. Step 6: Final answer
    x = 98,306.54

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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.