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Finding the Fourth Proportional to 102,960.80, 154,246.80 and 52,870.40

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Solution

The fourth proportional to 102,960.80, 154,246.80 and 52,870.40 is: 79,205.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,960.80 : 154,246.80 = 52,870.40 : x
  2. Step 2: Convert to fraction form
    102,960.80/154,246.80 = 52,870.40/x
  3. Step 3: Cross multiply
    102,960.80x = 154,246.80 × 52,870.40
  4. Step 4: Simplify right side
    102,960.80x = 8,155,090,014.72
  5. Step 5: Solve for x
    x = 8,155,090,014.72/102,960.80
  6. Step 6: Final answer
    x = 79,205.78

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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.