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Finding the Fourth Proportional to 118,643.84, 163,763.52 and 68,378.24

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Solution

The fourth proportional to 118,643.84, 163,763.52 and 68,378.24 is: 94,382.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,643.84 : 163,763.52 = 68,378.24 : x
  2. Step 2: Convert to fraction form
    118,643.84/163,763.52 = 68,378.24/x
  3. Step 3: Cross multiply
    118,643.84x = 163,763.52 × 68,378.24
  4. Step 4: Simplify right side
    118,643.84x = 11,197,861,273.80
  5. Step 5: Solve for x
    x = 11,197,861,273.80/118,643.84
  6. Step 6: Final answer
    x = 94,382.15

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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.