Home / 154,909.10-213,757.20-86,911.94

Finding the Fourth Proportional to 154,909.10, 213,757.20 and 86,911.94

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Solution

The fourth proportional to 154,909.10, 213,757.20 and 86,911.94 is: 119,928.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,909.10 : 213,757.20 = 86,911.94 : x
  2. Step 2: Convert to fraction form
    154,909.10/213,757.20 = 86,911.94/x
  3. Step 3: Cross multiply
    154,909.10x = 213,757.20 × 86,911.94
  4. Step 4: Simplify right side
    154,909.10x = 18,578,053,475.36
  5. Step 5: Solve for x
    x = 18,578,053,475.36/154,909.10
  6. Step 6: Final answer
    x = 119,928.74

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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.