Home / 154,561.34-213,297.36-86,577.78

Finding the Fourth Proportional to 154,561.34, 213,297.36 and 86,577.78

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Solution

The fourth proportional to 154,561.34, 213,297.36 and 86,577.78 is: 119,478.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,561.34 : 213,297.36 = 86,577.78 : x
  2. Step 2: Convert to fraction form
    154,561.34/213,297.36 = 86,577.78/x
  3. Step 3: Cross multiply
    154,561.34x = 213,297.36 × 86,577.78
  4. Step 4: Simplify right side
    154,561.34x = 18,466,811,908.66
  5. Step 5: Solve for x
    x = 18,466,811,908.66/154,561.34
  6. Step 6: Final answer
    x = 119,478.85

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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.