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Finding the Fourth Proportional to 159,990.39, 220,775.63 and 88,369.79

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Solution

The fourth proportional to 159,990.39, 220,775.63 and 88,369.79 is: 121,944.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,990.39 : 220,775.63 = 88,369.79 : x
  2. Step 2: Convert to fraction form
    159,990.39/220,775.63 = 88,369.79/x
  3. Step 3: Cross multiply
    159,990.39x = 220,775.63 × 88,369.79
  4. Step 4: Simplify right side
    159,990.39x = 19,509,894,514.49
  5. Step 5: Solve for x
    x = 19,509,894,514.49/159,990.39
  6. Step 6: Final answer
    x = 121,944.16

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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.