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Finding the Fourth Proportional to 147,874.60, 221,811.90 and 42,704.20

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Solution

The fourth proportional to 147,874.60, 221,811.90 and 42,704.20 is: 64,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,874.60 : 221,811.90 = 42,704.20 : x
  2. Step 2: Convert to fraction form
    147,874.60/221,811.90 = 42,704.20/x
  3. Step 3: Cross multiply
    147,874.60x = 221,811.90 × 42,704.20
  4. Step 4: Simplify right side
    147,874.60x = 9,472,299,739.98
  5. Step 5: Solve for x
    x = 9,472,299,739.98/147,874.60
  6. Step 6: Final answer
    x = 64,056.30

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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.