Home / 220,783.16-304,686.70-120,185.40

Finding the Fourth Proportional to 220,783.16, 304,686.70 and 120,185.40

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Solution

The fourth proportional to 220,783.16, 304,686.70 and 120,185.40 is: 165,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,783.16 : 304,686.70 = 120,185.40 : x
  2. Step 2: Convert to fraction form
    220,783.16/304,686.70 = 120,185.40/x
  3. Step 3: Cross multiply
    220,783.16x = 304,686.70 × 120,185.40
  4. Step 4: Simplify right side
    220,783.16x = 36,618,892,914.18
  5. Step 5: Solve for x
    x = 36,618,892,914.18/220,783.16
  6. Step 6: Final answer
    x = 165,859.09

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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.