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Finding the Fourth Proportional to 156,063.20, 233,749.20 and 128,415.20

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Solution

The fourth proportional to 156,063.20, 233,749.20 and 128,415.20 is: 192,338.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,063.20 : 233,749.20 = 128,415.20 : x
  2. Step 2: Convert to fraction form
    156,063.20/233,749.20 = 128,415.20/x
  3. Step 3: Cross multiply
    156,063.20x = 233,749.20 × 128,415.20
  4. Step 4: Simplify right side
    156,063.20x = 30,016,950,267.84
  5. Step 5: Solve for x
    x = 30,016,950,267.84/156,063.20
  6. Step 6: Final answer
    x = 192,338.43

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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.