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Finding the Fourth Proportional to 163,539.51, 225,703.22 and 90,949.63

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Solution

The fourth proportional to 163,539.51, 225,703.22 and 90,949.63 is: 125,520.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,539.51 : 225,703.22 = 90,949.63 : x
  2. Step 2: Convert to fraction form
    163,539.51/225,703.22 = 90,949.63/x
  3. Step 3: Cross multiply
    163,539.51x = 225,703.22 × 90,949.63
  4. Step 4: Simplify right side
    163,539.51x = 20,527,624,348.81
  5. Step 5: Solve for x
    x = 20,527,624,348.81/163,539.51
  6. Step 6: Final answer
    x = 125,520.89

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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.