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Finding the Fourth Proportional to 118,378.75, 163,367.55 and 68,077.75

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Solution

The fourth proportional to 118,378.75, 163,367.55 and 68,077.75 is: 93,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,378.75 : 163,367.55 = 68,077.75 : x
  2. Step 2: Convert to fraction form
    118,378.75/163,367.55 = 68,077.75/x
  3. Step 3: Cross multiply
    118,378.75x = 163,367.55 × 68,077.75
  4. Step 4: Simplify right side
    118,378.75x = 11,121,695,227.01
  5. Step 5: Solve for x
    x = 11,121,695,227.01/118,378.75
  6. Step 6: Final answer
    x = 93,950.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.