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Finding the Fourth Proportional to 102,951.80, 154,427.70 and 43,789.40

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Solution

The fourth proportional to 102,951.80, 154,427.70 and 43,789.40 is: 65,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,951.80 : 154,427.70 = 43,789.40 : x
  2. Step 2: Convert to fraction form
    102,951.80/154,427.70 = 43,789.40/x
  3. Step 3: Cross multiply
    102,951.80x = 154,427.70 × 43,789.40
  4. Step 4: Simplify right side
    102,951.80x = 6,762,296,326.38
  5. Step 5: Solve for x
    x = 6,762,296,326.38/102,951.80
  6. Step 6: Final answer
    x = 65,684.10

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1.5x scale

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.