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Finding the Fourth Proportional to 118,625.72, 163,706.13 and 64,910.70

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Solution

The fourth proportional to 118,625.72, 163,706.13 and 64,910.70 is: 89,578.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,625.72 : 163,706.13 = 64,910.70 : x
  2. Step 2: Convert to fraction form
    118,625.72/163,706.13 = 64,910.70/x
  3. Step 3: Cross multiply
    118,625.72x = 163,706.13 × 64,910.70
  4. Step 4: Simplify right side
    118,625.72x = 10,626,279,492.59
  5. Step 5: Solve for x
    x = 10,626,279,492.59/118,625.72
  6. Step 6: Final answer
    x = 89,578.21

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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.