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Finding the Fourth Proportional to 168,615.06, 253,047.31 and 79,868.76

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Solution

The fourth proportional to 168,615.06, 253,047.31 and 79,868.76 is: 119,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,615.06 : 253,047.31 = 79,868.76 : x
  2. Step 2: Convert to fraction form
    168,615.06/253,047.31 = 79,868.76/x
  3. Step 3: Cross multiply
    168,615.06x = 253,047.31 × 79,868.76
  4. Step 4: Simplify right side
    168,615.06x = 20,210,574,871.04
  5. Step 5: Solve for x
    x = 20,210,574,871.04/168,615.06
  6. Step 6: Final answer
    x = 119,862.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.