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Finding the Fourth Proportional to 102,540.70, 153,811.05 and 43,356.70

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Solution

The fourth proportional to 102,540.70, 153,811.05 and 43,356.70 is: 65,035.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,540.70 : 153,811.05 = 43,356.70 : x
  2. Step 2: Convert to fraction form
    102,540.70/153,811.05 = 43,356.70/x
  3. Step 3: Cross multiply
    102,540.70x = 153,811.05 × 43,356.70
  4. Step 4: Simplify right side
    102,540.70x = 6,668,739,551.54
  5. Step 5: Solve for x
    x = 6,668,739,551.54/102,540.70
  6. Step 6: Final answer
    x = 65,035.05

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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.