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Finding the Fourth Proportional to 126,353.75, 174,390.45 and 75,369.65

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Solution

The fourth proportional to 126,353.75, 174,390.45 and 75,369.65 is: 104,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,353.75 : 174,390.45 = 75,369.65 : x
  2. Step 2: Convert to fraction form
    126,353.75/174,390.45 = 75,369.65/x
  3. Step 3: Cross multiply
    126,353.75x = 174,390.45 × 75,369.65
  4. Step 4: Simplify right side
    126,353.75x = 13,143,747,179.84
  5. Step 5: Solve for x
    x = 13,143,747,179.84/126,353.75
  6. Step 6: Final answer
    x = 104,023.40

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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.