Home / 128,256.66-176,993.82-71,668.08

Finding the Fourth Proportional to 128,256.66, 176,993.82 and 71,668.08

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Solution

The fourth proportional to 128,256.66, 176,993.82 and 71,668.08 is: 98,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,256.66 : 176,993.82 = 71,668.08 : x
  2. Step 2: Convert to fraction form
    128,256.66/176,993.82 = 71,668.08/x
  3. Step 3: Cross multiply
    128,256.66x = 176,993.82 × 71,668.08
  4. Step 4: Simplify right side
    128,256.66x = 12,684,807,251.27
  5. Step 5: Solve for x
    x = 12,684,807,251.27/128,256.66
  6. Step 6: Final answer
    x = 98,901.74

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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.