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Finding the Fourth Proportional to 74,146.62, 111,219.93 and 18,742.62

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Solution

The fourth proportional to 74,146.62, 111,219.93 and 18,742.62 is: 28,113.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,146.62 : 111,219.93 = 18,742.62 : x
  2. Step 2: Convert to fraction form
    74,146.62/111,219.93 = 18,742.62/x
  3. Step 3: Cross multiply
    74,146.62x = 111,219.93 × 18,742.62
  4. Step 4: Simplify right side
    74,146.62x = 2,084,552,884.42
  5. Step 5: Solve for x
    x = 2,084,552,884.42/74,146.62
  6. Step 6: Final answer
    x = 28,113.93

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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.