Home / 118,439.30-177,788.55-74,116.10

Finding the Fourth Proportional to 118,439.30, 177,788.55 and 74,116.10

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Solution

The fourth proportional to 118,439.30, 177,788.55 and 74,116.10 is: 111,255.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,439.30 : 177,788.55 = 74,116.10 : x
  2. Step 2: Convert to fraction form
    118,439.30/177,788.55 = 74,116.10/x
  3. Step 3: Cross multiply
    118,439.30x = 177,788.55 × 74,116.10
  4. Step 4: Simplify right side
    118,439.30x = 13,176,993,950.66
  5. Step 5: Solve for x
    x = 13,176,993,950.66/118,439.30
  6. Step 6: Final answer
    x = 111,255.25

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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.