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Finding the Fourth Proportional to 146,421, 202,062.20 and 79,353

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Solution

The fourth proportional to 146,421, 202,062.20 and 79,353 is: 109,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,421 : 202,062.20 = 79,353 : x
  2. Step 2: Convert to fraction form
    146,421/202,062.20 = 79,353/x
  3. Step 3: Cross multiply
    146,421x = 202,062.20 × 79,353
  4. Step 4: Simplify right side
    146,421x = 16,034,241,359.84
  5. Step 5: Solve for x
    x = 16,034,241,359.84/146,421
  6. Step 6: Final answer
    x = 109,507.80

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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.