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Finding the Fourth Proportional to 161,689.81, 242,534.73 and 61,880.62

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Solution

The fourth proportional to 161,689.81, 242,534.73 and 61,880.62 is: 92,820.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,689.81 : 242,534.73 = 61,880.62 : x
  2. Step 2: Convert to fraction form
    161,689.81/242,534.73 = 61,880.62/x
  3. Step 3: Cross multiply
    161,689.81x = 242,534.73 × 61,880.62
  4. Step 4: Simplify right side
    161,689.81x = 15,008,199,463.93
  5. Step 5: Solve for x
    x = 15,008,199,463.93/161,689.81
  6. Step 6: Final answer
    x = 92,820.94

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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.