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Finding the Fourth Proportional to 162,011.20, 242,911.20 and 145,422.40

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Solution

The fourth proportional to 162,011.20, 242,911.20 and 145,422.40 is: 218,038.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,011.20 : 242,911.20 = 145,422.40 : x
  2. Step 2: Convert to fraction form
    162,011.20/242,911.20 = 145,422.40/x
  3. Step 3: Cross multiply
    162,011.20x = 242,911.20 × 145,422.40
  4. Step 4: Simplify right side
    162,011.20x = 35,324,729,690.88
  5. Step 5: Solve for x
    x = 35,324,729,690.88/162,011.20
  6. Step 6: Final answer
    x = 218,038.81

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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.