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Finding the Fourth Proportional to 162,439.60, 243,335.40 and 142,956.40

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Solution

The fourth proportional to 162,439.60, 243,335.40 and 142,956.40 is: 214,149.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,439.60 : 243,335.40 = 142,956.40 : x
  2. Step 2: Convert to fraction form
    162,439.60/243,335.40 = 142,956.40/x
  3. Step 3: Cross multiply
    162,439.60x = 243,335.40 × 142,956.40
  4. Step 4: Simplify right side
    162,439.60x = 34,786,352,776.56
  5. Step 5: Solve for x
    x = 34,786,352,776.56/162,439.60
  6. Step 6: Final answer
    x = 214,149.46

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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.