Home / 154,512.04-213,209-86,519.56

Finding the Fourth Proportional to 154,512.04, 213,209 and 86,519.56

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Solution

The fourth proportional to 154,512.04, 213,209 and 86,519.56 is: 119,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,512.04 : 213,209 = 86,519.56 : x
  2. Step 2: Convert to fraction form
    154,512.04/213,209 = 86,519.56/x
  3. Step 3: Cross multiply
    154,512.04x = 213,209 × 86,519.56
  4. Step 4: Simplify right side
    154,512.04x = 18,446,748,868.04
  5. Step 5: Solve for x
    x = 18,446,748,868.04/154,512.04
  6. Step 6: Final answer
    x = 119,387.13

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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.