Home / 163,421.28-225,464.76-91,791.36

Finding the Fourth Proportional to 163,421.28, 225,464.76 and 91,791.36

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Solution

The fourth proportional to 163,421.28, 225,464.76 and 91,791.36 is: 126,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,421.28 : 225,464.76 = 91,791.36 : x
  2. Step 2: Convert to fraction form
    163,421.28/225,464.76 = 91,791.36/x
  3. Step 3: Cross multiply
    163,421.28x = 225,464.76 × 91,791.36
  4. Step 4: Simplify right side
    163,421.28x = 20,695,716,952.47
  5. Step 5: Solve for x
    x = 20,695,716,952.47/163,421.28
  6. Step 6: Final answer
    x = 126,640.28

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1.5x scale

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.