Home / 114,419.12-171,269.64-78,671.84

Finding the Fourth Proportional to 114,419.12, 171,269.64 and 78,671.84

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Solution

The fourth proportional to 114,419.12, 171,269.64 and 78,671.84 is: 117,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,419.12 : 171,269.64 = 78,671.84 : x
  2. Step 2: Convert to fraction form
    114,419.12/171,269.64 = 78,671.84/x
  3. Step 3: Cross multiply
    114,419.12x = 171,269.64 × 78,671.84
  4. Step 4: Simplify right side
    114,419.12x = 13,474,097,714.94
  5. Step 5: Solve for x
    x = 13,474,097,714.94/114,419.12
  6. Step 6: Final answer
    x = 117,760.89

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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.