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Finding the Fourth Proportional to 159,369.93, 219,928.64 and 87,748.38

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Solution

The fourth proportional to 159,369.93, 219,928.64 and 87,748.38 is: 121,091.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,369.93 : 219,928.64 = 87,748.38 : x
  2. Step 2: Convert to fraction form
    159,369.93/219,928.64 = 87,748.38/x
  3. Step 3: Cross multiply
    159,369.93x = 219,928.64 × 87,748.38
  4. Step 4: Simplify right side
    159,369.93x = 19,298,381,436.86
  5. Step 5: Solve for x
    x = 19,298,381,436.86/159,369.93
  6. Step 6: Final answer
    x = 121,091.74

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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.