Home / 218,065.11-300,885.75-127,403.57

Finding the Fourth Proportional to 218,065.11, 300,885.75 and 127,403.57

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Solution

The fourth proportional to 218,065.11, 300,885.75 and 127,403.57 is: 175,791.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,065.11 : 300,885.75 = 127,403.57 : x
  2. Step 2: Convert to fraction form
    218,065.11/300,885.75 = 127,403.57/x
  3. Step 3: Cross multiply
    218,065.11x = 300,885.75 × 127,403.57
  4. Step 4: Simplify right side
    218,065.11x = 38,333,917,207.70
  5. Step 5: Solve for x
    x = 38,333,917,207.70/218,065.11
  6. Step 6: Final answer
    x = 175,791.15

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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.