Home / 128,185.65-176,896.03-71,597.03

Finding the Fourth Proportional to 128,185.65, 176,896.03 and 71,597.03

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Solution

The fourth proportional to 128,185.65, 176,896.03 and 71,597.03 is: 98,803.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.65 : 176,896.03 = 71,597.03 : x
  2. Step 2: Convert to fraction form
    128,185.65/176,896.03 = 71,597.03/x
  3. Step 3: Cross multiply
    128,185.65x = 176,896.03 × 71,597.03
  4. Step 4: Simplify right side
    128,185.65x = 12,665,230,366.79
  5. Step 5: Solve for x
    x = 12,665,230,366.79/128,185.65
  6. Step 6: Final answer
    x = 98,803.81

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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.