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Finding the Fourth Proportional to 145,909.50, 218,738.97 and 51,126.54

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Solution

The fourth proportional to 145,909.50, 218,738.97 and 51,126.54 is: 76,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,909.50 : 218,738.97 = 51,126.54 : x
  2. Step 2: Convert to fraction form
    145,909.50/218,738.97 = 51,126.54/x
  3. Step 3: Cross multiply
    145,909.50x = 218,738.97 × 51,126.54
  4. Step 4: Simplify right side
    145,909.50x = 11,183,366,699.26
  5. Step 5: Solve for x
    x = 11,183,366,699.26/145,909.50
  6. Step 6: Final answer
    x = 76,645.91

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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.