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Finding the Fourth Proportional to 163,301.79, 225,348.96 and 90,709.29

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Solution

The fourth proportional to 163,301.79, 225,348.96 and 90,709.29 is: 125,174.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,301.79 : 225,348.96 = 90,709.29 : x
  2. Step 2: Convert to fraction form
    163,301.79/225,348.96 = 90,709.29/x
  3. Step 3: Cross multiply
    163,301.79x = 225,348.96 × 90,709.29
  4. Step 4: Simplify right side
    163,301.79x = 20,441,243,993.76
  5. Step 5: Solve for x
    x = 20,441,243,993.76/163,301.79
  6. Step 6: Final answer
    x = 125,174.64

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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.