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Finding the Fourth Proportional to 162,309.40, 243,755.70 and 117,986.20

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Solution

The fourth proportional to 162,309.40, 243,755.70 and 117,986.20 is: 177,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,309.40 : 243,755.70 = 117,986.20 : x
  2. Step 2: Convert to fraction form
    162,309.40/243,755.70 = 117,986.20/x
  3. Step 3: Cross multiply
    162,309.40x = 243,755.70 × 117,986.20
  4. Step 4: Simplify right side
    162,309.40x = 28,759,808,771.34
  5. Step 5: Solve for x
    x = 28,759,808,771.34/162,309.40
  6. Step 6: Final answer
    x = 177,191.27

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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.