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Finding the Fourth Proportional to 162,191.21, 243,338.87 and 77,957.48

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Solution

The fourth proportional to 162,191.21, 243,338.87 and 77,957.48 is: 116,961.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,191.21 : 243,338.87 = 77,957.48 : x
  2. Step 2: Convert to fraction form
    162,191.21/243,338.87 = 77,957.48/x
  3. Step 3: Cross multiply
    162,191.21x = 243,338.87 × 77,957.48
  4. Step 4: Simplify right side
    162,191.21x = 18,970,084,771.59
  5. Step 5: Solve for x
    x = 18,970,084,771.59/162,191.21
  6. Step 6: Final answer
    x = 116,961.24

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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.