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Finding the Fourth Proportional to 119,527.21, 178,911.59 and 66,776.77

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Solution

The fourth proportional to 119,527.21, 178,911.59 and 66,776.77 is: 99,953.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,527.21 : 178,911.59 = 66,776.77 : x
  2. Step 2: Convert to fraction form
    119,527.21/178,911.59 = 66,776.77/x
  3. Step 3: Cross multiply
    119,527.21x = 178,911.59 × 66,776.77
  4. Step 4: Simplify right side
    119,527.21x = 11,947,137,761.88
  5. Step 5: Solve for x
    x = 11,947,137,761.88/119,527.21
  6. Step 6: Final answer
    x = 99,953.29

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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.