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Finding the Fourth Proportional to 146,878, 202,692.18 and 79,810

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Solution

The fourth proportional to 146,878, 202,692.18 and 79,810 is: 110,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,878 : 202,692.18 = 79,810 : x
  2. Step 2: Convert to fraction form
    146,878/202,692.18 = 79,810/x
  3. Step 3: Cross multiply
    146,878x = 202,692.18 × 79,810
  4. Step 4: Simplify right side
    146,878x = 16,176,862,885.80
  5. Step 5: Solve for x
    x = 16,176,862,885.80/146,878
  6. Step 6: Final answer
    x = 110,138.09

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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.