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Finding the Fourth Proportional to 159,796.99, 220,436.80 and 129,616.39

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Solution

The fourth proportional to 159,796.99, 220,436.80 and 129,616.39 is: 178,803.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,796.99 : 220,436.80 = 129,616.39 : x
  2. Step 2: Convert to fraction form
    159,796.99/220,436.80 = 129,616.39/x
  3. Step 3: Cross multiply
    159,796.99x = 220,436.80 × 129,616.39
  4. Step 4: Simplify right side
    159,796.99x = 28,572,222,239.15
  5. Step 5: Solve for x
    x = 28,572,222,239.15/159,796.99
  6. Step 6: Final answer
    x = 178,803.26

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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.