Home / 118,078.20-177,117.30-103,315.95

Finding the Fourth Proportional to 118,078.20, 177,117.30 and 103,315.95

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Solution

The fourth proportional to 118,078.20, 177,117.30 and 103,315.95 is: 154,973.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,078.20 : 177,117.30 = 103,315.95 : x
  2. Step 2: Convert to fraction form
    118,078.20/177,117.30 = 103,315.95/x
  3. Step 3: Cross multiply
    118,078.20x = 177,117.30 × 103,315.95
  4. Step 4: Simplify right side
    118,078.20x = 18,299,042,110.94
  5. Step 5: Solve for x
    x = 18,299,042,110.94/118,078.20
  6. Step 6: Final answer
    x = 154,973.93

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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.