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Finding the Fourth Proportional to 102,739.60, 154,109.40 and 63,373.60

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Solution

The fourth proportional to 102,739.60, 154,109.40 and 63,373.60 is: 95,060.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,739.60 : 154,109.40 = 63,373.60 : x
  2. Step 2: Convert to fraction form
    102,739.60/154,109.40 = 63,373.60/x
  3. Step 3: Cross multiply
    102,739.60x = 154,109.40 × 63,373.60
  4. Step 4: Simplify right side
    102,739.60x = 9,766,467,471.84
  5. Step 5: Solve for x
    x = 9,766,467,471.84/102,739.60
  6. Step 6: Final answer
    x = 95,060.40

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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.