Home / 235,721.79-325,295.10-128,291.81

Finding the Fourth Proportional to 235,721.79, 325,295.10 and 128,291.81

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Solution

The fourth proportional to 235,721.79, 325,295.10 and 128,291.81 is: 177,042.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,721.79 : 325,295.10 = 128,291.81 : x
  2. Step 2: Convert to fraction form
    235,721.79/325,295.10 = 128,291.81/x
  3. Step 3: Cross multiply
    235,721.79x = 325,295.10 × 128,291.81
  4. Step 4: Simplify right side
    235,721.79x = 41,732,695,536.66
  5. Step 5: Solve for x
    x = 41,732,695,536.66/235,721.79
  6. Step 6: Final answer
    x = 177,042.16

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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.