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Finding the Fourth Proportional to 169,199.28, 253,784.40 and 69,330.96

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Solution

The fourth proportional to 169,199.28, 253,784.40 and 69,330.96 is: 103,990.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,199.28 : 253,784.40 = 69,330.96 : x
  2. Step 2: Convert to fraction form
    169,199.28/253,784.40 = 69,330.96/x
  3. Step 3: Cross multiply
    169,199.28x = 253,784.40 × 69,330.96
  4. Step 4: Simplify right side
    169,199.28x = 17,595,116,085.02
  5. Step 5: Solve for x
    x = 17,595,116,085.02/169,199.28
  6. Step 6: Final answer
    x = 103,990.49

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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.