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Finding the Fourth Proportional to 162,212.40, 243,172.80 and 103,017.60

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Solution

The fourth proportional to 162,212.40, 243,172.80 and 103,017.60 is: 154,433.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,212.40 : 243,172.80 = 103,017.60 : x
  2. Step 2: Convert to fraction form
    162,212.40/243,172.80 = 103,017.60/x
  3. Step 3: Cross multiply
    162,212.40x = 243,172.80 × 103,017.60
  4. Step 4: Simplify right side
    162,212.40x = 25,051,078,241.28
  5. Step 5: Solve for x
    x = 25,051,078,241.28/162,212.40
  6. Step 6: Final answer
    x = 154,433.81

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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.