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Finding the Fourth Proportional to 146,649.61, 202,376.45 and 79,581.61

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Solution

The fourth proportional to 146,649.61, 202,376.45 and 79,581.61 is: 109,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,649.61 : 202,376.45 = 79,581.61 : x
  2. Step 2: Convert to fraction form
    146,649.61/202,376.45 = 79,581.61/x
  3. Step 3: Cross multiply
    146,649.61x = 202,376.45 × 79,581.61
  4. Step 4: Simplify right side
    146,649.61x = 16,105,443,717.08
  5. Step 5: Solve for x
    x = 16,105,443,717.08/146,649.61
  6. Step 6: Final answer
    x = 109,822.62

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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.