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Finding the Fourth Proportional to 168,615.18, 253,047.52 and 79,868.90

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Solution

The fourth proportional to 168,615.18, 253,047.52 and 79,868.90 is: 119,862.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,615.18 : 253,047.52 = 79,868.90 : x
  2. Step 2: Convert to fraction form
    168,615.18/253,047.52 = 79,868.90/x
  3. Step 3: Cross multiply
    168,615.18x = 253,047.52 × 79,868.90
  4. Step 4: Simplify right side
    168,615.18x = 20,210,627,070.13
  5. Step 5: Solve for x
    x = 20,210,627,070.13/168,615.18
  6. Step 6: Final answer
    x = 119,862.44

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1.5x scale

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.