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Finding the Fourth Proportional to 147,051.80, 220,431.90 and 72,110.60

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Solution

The fourth proportional to 147,051.80, 220,431.90 and 72,110.60 is: 108,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,051.80 : 220,431.90 = 72,110.60 : x
  2. Step 2: Convert to fraction form
    147,051.80/220,431.90 = 72,110.60/x
  3. Step 3: Cross multiply
    147,051.80x = 220,431.90 × 72,110.60
  4. Step 4: Simplify right side
    147,051.80x = 15,895,476,568.14
  5. Step 5: Solve for x
    x = 15,895,476,568.14/147,051.80
  6. Step 6: Final answer
    x = 108,094.40

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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.