Home / 216,936.43-299,355.65-121,430.14

Finding the Fourth Proportional to 216,936.43, 299,355.65 and 121,430.14

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Solution

The fourth proportional to 216,936.43, 299,355.65 and 121,430.14 is: 167,564.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,936.43 : 299,355.65 = 121,430.14 : x
  2. Step 2: Convert to fraction form
    216,936.43/299,355.65 = 121,430.14/x
  3. Step 3: Cross multiply
    216,936.43x = 299,355.65 × 121,430.14
  4. Step 4: Simplify right side
    216,936.43x = 36,350,797,589.11
  5. Step 5: Solve for x
    x = 36,350,797,589.11/216,936.43
  6. Step 6: Final answer
    x = 167,564.29

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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.