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Finding the Fourth Proportional to 169,403.29, 254,012.11 and 78,119.60

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Solution

The fourth proportional to 169,403.29, 254,012.11 and 78,119.60 is: 117,136.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,403.29 : 254,012.11 = 78,119.60 : x
  2. Step 2: Convert to fraction form
    169,403.29/254,012.11 = 78,119.60/x
  3. Step 3: Cross multiply
    169,403.29x = 254,012.11 × 78,119.60
  4. Step 4: Simplify right side
    169,403.29x = 19,843,322,963.00
  5. Step 5: Solve for x
    x = 19,843,322,963.00/169,403.29
  6. Step 6: Final answer
    x = 117,136.59

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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.