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Finding the Fourth Proportional to 112,771.74, 169,104.65 and 65,400.30

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Solution

The fourth proportional to 112,771.74, 169,104.65 and 65,400.30 is: 98,069.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,771.74 : 169,104.65 = 65,400.30 : x
  2. Step 2: Convert to fraction form
    112,771.74/169,104.65 = 65,400.30/x
  3. Step 3: Cross multiply
    112,771.74x = 169,104.65 × 65,400.30
  4. Step 4: Simplify right side
    112,771.74x = 11,059,494,552.50
  5. Step 5: Solve for x
    x = 11,059,494,552.50/112,771.74
  6. Step 6: Final answer
    x = 98,069.73

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1.5x scale

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.