Home / 144,020.69-198,693.11-90,212.03

Finding the Fourth Proportional to 144,020.69, 198,693.11 and 90,212.03

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Solution

The fourth proportional to 144,020.69, 198,693.11 and 90,212.03 is: 124,457.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,020.69 : 198,693.11 = 90,212.03 : x
  2. Step 2: Convert to fraction form
    144,020.69/198,693.11 = 90,212.03/x
  3. Step 3: Cross multiply
    144,020.69x = 198,693.11 × 90,212.03
  4. Step 4: Simplify right side
    144,020.69x = 17,924,508,032.18
  5. Step 5: Solve for x
    x = 17,924,508,032.18/144,020.69
  6. Step 6: Final answer
    x = 124,457.87

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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.