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Finding the Fourth Proportional to 145,236.67, 218,041.58 and 111,977.86

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Solution

The fourth proportional to 145,236.67, 218,041.58 and 111,977.86 is: 168,110.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,236.67 : 218,041.58 = 111,977.86 : x
  2. Step 2: Convert to fraction form
    145,236.67/218,041.58 = 111,977.86/x
  3. Step 3: Cross multiply
    145,236.67x = 218,041.58 × 111,977.86
  4. Step 4: Simplify right side
    145,236.67x = 24,415,829,519.42
  5. Step 5: Solve for x
    x = 24,415,829,519.42/145,236.67
  6. Step 6: Final answer
    x = 168,110.64

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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.