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Finding the Fourth Proportional to 128,858.76, 193,037.58 and 72,527.04

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Solution

The fourth proportional to 128,858.76, 193,037.58 and 72,527.04 is: 108,649.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,858.76 : 193,037.58 = 72,527.04 : x
  2. Step 2: Convert to fraction form
    128,858.76/193,037.58 = 72,527.04/x
  3. Step 3: Cross multiply
    128,858.76x = 193,037.58 × 72,527.04
  4. Step 4: Simplify right side
    128,858.76x = 14,000,444,286.16
  5. Step 5: Solve for x
    x = 14,000,444,286.16/128,858.76
  6. Step 6: Final answer
    x = 108,649.53

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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.