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Finding the Fourth Proportional to 161,711.81, 242,614.51 and 66,924.49

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Solution

The fourth proportional to 161,711.81, 242,614.51 and 66,924.49 is: 100,406.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,711.81 : 242,614.51 = 66,924.49 : x
  2. Step 2: Convert to fraction form
    161,711.81/242,614.51 = 66,924.49/x
  3. Step 3: Cross multiply
    161,711.81x = 242,614.51 × 66,924.49
  4. Step 4: Simplify right side
    161,711.81x = 16,236,852,484.31
  5. Step 5: Solve for x
    x = 16,236,852,484.31/161,711.81
  6. Step 6: Final answer
    x = 100,406.11

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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.