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Finding the Fourth Proportional to 102,952.20, 154,428.30 and 61,480.20

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Solution

The fourth proportional to 102,952.20, 154,428.30 and 61,480.20 is: 92,220.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,952.20 : 154,428.30 = 61,480.20 : x
  2. Step 2: Convert to fraction form
    102,952.20/154,428.30 = 61,480.20/x
  3. Step 3: Cross multiply
    102,952.20x = 154,428.30 × 61,480.20
  4. Step 4: Simplify right side
    102,952.20x = 9,494,282,769.66
  5. Step 5: Solve for x
    x = 9,494,282,769.66/102,952.20
  6. Step 6: Final answer
    x = 92,220.30

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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.