Home / 138,086.04-190,609.58-121,269.40

Finding the Fourth Proportional to 138,086.04, 190,609.58 and 121,269.40

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Solution

The fourth proportional to 138,086.04, 190,609.58 and 121,269.40 is: 167,396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,086.04 : 190,609.58 = 121,269.40 : x
  2. Step 2: Convert to fraction form
    138,086.04/190,609.58 = 121,269.40/x
  3. Step 3: Cross multiply
    138,086.04x = 190,609.58 × 121,269.40
  4. Step 4: Simplify right side
    138,086.04x = 23,115,109,400.85
  5. Step 5: Solve for x
    x = 23,115,109,400.85/138,086.04
  6. Step 6: Final answer
    x = 167,396.42

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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.