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Finding the Fourth Proportional to 146,691, 202,434.12 and 79,623

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Solution

The fourth proportional to 146,691, 202,434.12 and 79,623 is: 109,880.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,691 : 202,434.12 = 79,623 : x
  2. Step 2: Convert to fraction form
    146,691/202,434.12 = 79,623/x
  3. Step 3: Cross multiply
    146,691x = 202,434.12 × 79,623
  4. Step 4: Simplify right side
    146,691x = 16,118,411,936.76
  5. Step 5: Solve for x
    x = 16,118,411,936.76/146,691
  6. Step 6: Final answer
    x = 109,880.03

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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.