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Finding the Fourth Proportional to 161,689.92, 242,475.76 and 61,800.72

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Solution

The fourth proportional to 161,689.92, 242,475.76 and 61,800.72 is: 92,678.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,689.92 : 242,475.76 = 61,800.72 : x
  2. Step 2: Convert to fraction form
    161,689.92/242,475.76 = 61,800.72/x
  3. Step 3: Cross multiply
    161,689.92x = 242,475.76 × 61,800.72
  4. Step 4: Simplify right side
    161,689.92x = 14,985,176,550.55
  5. Step 5: Solve for x
    x = 14,985,176,550.55/161,689.92
  6. Step 6: Final answer
    x = 92,678.48

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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.