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Finding the Fourth Proportional to 112,777.92, 155,650.10 and 65,021.92

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Solution

The fourth proportional to 112,777.92, 155,650.10 and 65,021.92 is: 89,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,777.92 : 155,650.10 = 65,021.92 : x
  2. Step 2: Convert to fraction form
    112,777.92/155,650.10 = 65,021.92/x
  3. Step 3: Cross multiply
    112,777.92x = 155,650.10 × 65,021.92
  4. Step 4: Simplify right side
    112,777.92x = 10,120,668,350.19
  5. Step 5: Solve for x
    x = 10,120,668,350.19/112,777.92
  6. Step 6: Final answer
    x = 89,739.80

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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.