Home / 239,089.12-329,930.04-137,118.88

Finding the Fourth Proportional to 239,089.12, 329,930.04 and 137,118.88

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Solution

The fourth proportional to 239,089.12, 329,930.04 and 137,118.88 is: 189,216.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,089.12 : 329,930.04 = 137,118.88 : x
  2. Step 2: Convert to fraction form
    239,089.12/329,930.04 = 137,118.88/x
  3. Step 3: Cross multiply
    239,089.12x = 329,930.04 × 137,118.88
  4. Step 4: Simplify right side
    239,089.12x = 45,239,637,563.16
  5. Step 5: Solve for x
    x = 45,239,637,563.16/239,089.12
  6. Step 6: Final answer
    x = 189,216.63

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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.