Home / 220,989.36-304,964.76-120,387.12

Finding the Fourth Proportional to 220,989.36, 304,964.76 and 120,387.12

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Solution

The fourth proportional to 220,989.36, 304,964.76 and 120,387.12 is: 166,133.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,989.36 : 304,964.76 = 120,387.12 : x
  2. Step 2: Convert to fraction form
    220,989.36/304,964.76 = 120,387.12/x
  3. Step 3: Cross multiply
    220,989.36x = 304,964.76 × 120,387.12
  4. Step 4: Simplify right side
    220,989.36x = 36,713,829,157.89
  5. Step 5: Solve for x
    x = 36,713,829,157.89/220,989.36
  6. Step 6: Final answer
    x = 166,133.92

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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.