Home / 128,771.28-193,109.60-44,509.84

Finding the Fourth Proportional to 128,771.28, 193,109.60 and 44,509.84

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Solution

The fourth proportional to 128,771.28, 193,109.60 and 44,509.84 is: 66,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,771.28 : 193,109.60 = 44,509.84 : x
  2. Step 2: Convert to fraction form
    128,771.28/193,109.60 = 44,509.84/x
  3. Step 3: Cross multiply
    128,771.28x = 193,109.60 × 44,509.84
  4. Step 4: Simplify right side
    128,771.28x = 8,595,277,398.46
  5. Step 5: Solve for x
    x = 8,595,277,398.46/128,771.28
  6. Step 6: Final answer
    x = 66,748.40

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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.