Home / 154,964.72-213,834.88-86,989.18

Finding the Fourth Proportional to 154,964.72, 213,834.88 and 86,989.18

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Solution

The fourth proportional to 154,964.72, 213,834.88 and 86,989.18 is: 120,035.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,964.72 : 213,834.88 = 86,989.18 : x
  2. Step 2: Convert to fraction form
    154,964.72/213,834.88 = 86,989.18/x
  3. Step 3: Cross multiply
    154,964.72x = 213,834.88 × 86,989.18
  4. Step 4: Simplify right side
    154,964.72x = 18,601,320,649.13
  5. Step 5: Solve for x
    x = 18,601,320,649.13/154,964.72
  6. Step 6: Final answer
    x = 120,035.84

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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.