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Finding the Fourth Proportional to 118,495.80, 163,524.18 and 64,780.80

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Solution

The fourth proportional to 118,495.80, 163,524.18 and 64,780.80 is: 89,397.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,495.80 : 163,524.18 = 64,780.80 : x
  2. Step 2: Convert to fraction form
    118,495.80/163,524.18 = 64,780.80/x
  3. Step 3: Cross multiply
    118,495.80x = 163,524.18 × 64,780.80
  4. Step 4: Simplify right side
    118,495.80x = 10,593,227,199.74
  5. Step 5: Solve for x
    x = 10,593,227,199.74/118,495.80
  6. Step 6: Final answer
    x = 89,397.49

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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.