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Finding the Fourth Proportional to 161,623.86, 242,352.78 and 86,806.96

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Solution

The fourth proportional to 161,623.86, 242,352.78 and 86,806.96 is: 130,165.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,623.86 : 242,352.78 = 86,806.96 : x
  2. Step 2: Convert to fraction form
    161,623.86/242,352.78 = 86,806.96/x
  3. Step 3: Cross multiply
    161,623.86x = 242,352.78 × 86,806.96
  4. Step 4: Simplify right side
    161,623.86x = 21,037,908,079.35
  5. Step 5: Solve for x
    x = 21,037,908,079.35/161,623.86
  6. Step 6: Final answer
    x = 130,165.86

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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.