Home / 236,351-326,165.40-128,923.36

Finding the Fourth Proportional to 236,351, 326,165.40 and 128,923.36

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Solution

The fourth proportional to 236,351, 326,165.40 and 128,923.36 is: 177,914.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,351 : 326,165.40 = 128,923.36 : x
  2. Step 2: Convert to fraction form
    236,351/326,165.40 = 128,923.36/x
  3. Step 3: Cross multiply
    236,351x = 326,165.40 × 128,923.36
  4. Step 4: Simplify right side
    236,351x = 42,050,339,283.74
  5. Step 5: Solve for x
    x = 42,050,339,283.74/236,351
  6. Step 6: Final answer
    x = 177,914.79

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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.