Home / 144,904.80-217,357.20-81,919.20

Finding the Fourth Proportional to 144,904.80, 217,357.20 and 81,919.20

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Solution

The fourth proportional to 144,904.80, 217,357.20 and 81,919.20 is: 122,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,904.80 : 217,357.20 = 81,919.20 : x
  2. Step 2: Convert to fraction form
    144,904.80/217,357.20 = 81,919.20/x
  3. Step 3: Cross multiply
    144,904.80x = 217,357.20 × 81,919.20
  4. Step 4: Simplify right side
    144,904.80x = 17,805,727,938.24
  5. Step 5: Solve for x
    x = 17,805,727,938.24/144,904.80
  6. Step 6: Final answer
    x = 122,878.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.