Home / 236,123.12-354,090.70-86,329.28

Finding the Fourth Proportional to 236,123.12, 354,090.70 and 86,329.28

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Solution

The fourth proportional to 236,123.12, 354,090.70 and 86,329.28 is: 129,459.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,123.12 : 354,090.70 = 86,329.28 : x
  2. Step 2: Convert to fraction form
    236,123.12/354,090.70 = 86,329.28/x
  3. Step 3: Cross multiply
    236,123.12x = 354,090.70 × 86,329.28
  4. Step 4: Simplify right side
    236,123.12x = 30,568,395,185.70
  5. Step 5: Solve for x
    x = 30,568,395,185.70/236,123.12
  6. Step 6: Final answer
    x = 129,459.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.