Home / 118,305.84-177,439.56-39,420.72

Finding the Fourth Proportional to 118,305.84, 177,439.56 and 39,420.72

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Solution

The fourth proportional to 118,305.84, 177,439.56 and 39,420.72 is: 59,124.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,305.84 : 177,439.56 = 39,420.72 : x
  2. Step 2: Convert to fraction form
    118,305.84/177,439.56 = 39,420.72/x
  3. Step 3: Cross multiply
    118,305.84x = 177,439.56 × 39,420.72
  4. Step 4: Simplify right side
    118,305.84x = 6,994,795,211.68
  5. Step 5: Solve for x
    x = 6,994,795,211.68/118,305.84
  6. Step 6: Final answer
    x = 59,124.68

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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.