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Finding the Fourth Proportional to 162,856.20, 243,938.70 and 135,208.20

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Solution

The fourth proportional to 162,856.20, 243,938.70 and 135,208.20 is: 202,525.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,856.20 : 243,938.70 = 135,208.20 : x
  2. Step 2: Convert to fraction form
    162,856.20/243,938.70 = 135,208.20/x
  3. Step 3: Cross multiply
    162,856.20x = 243,938.70 × 135,208.20
  4. Step 4: Simplify right side
    162,856.20x = 32,982,512,537.34
  5. Step 5: Solve for x
    x = 32,982,512,537.34/162,856.20
  6. Step 6: Final answer
    x = 202,525.37

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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.