Home / 192,979.81-265,979.64-128,333.49

Finding the Fourth Proportional to 192,979.81, 265,979.64 and 128,333.49

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Solution

The fourth proportional to 192,979.81, 265,979.64 and 128,333.49 is: 176,879.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,979.81 : 265,979.64 = 128,333.49 : x
  2. Step 2: Convert to fraction form
    192,979.81/265,979.64 = 128,333.49/x
  3. Step 3: Cross multiply
    192,979.81x = 265,979.64 × 128,333.49
  4. Step 4: Simplify right side
    192,979.81x = 34,134,095,470.14
  5. Step 5: Solve for x
    x = 34,134,095,470.14/192,979.81
  6. Step 6: Final answer
    x = 176,879.11

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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.