Home / 145,212.20-217,829.10-51,705.80

Finding the Fourth Proportional to 145,212.20, 217,829.10 and 51,705.80

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Solution

The fourth proportional to 145,212.20, 217,829.10 and 51,705.80 is: 77,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,212.20 : 217,829.10 = 51,705.80 : x
  2. Step 2: Convert to fraction form
    145,212.20/217,829.10 = 51,705.80/x
  3. Step 3: Cross multiply
    145,212.20x = 217,829.10 × 51,705.80
  4. Step 4: Simplify right side
    145,212.20x = 11,263,027,878.78
  5. Step 5: Solve for x
    x = 11,263,027,878.78/145,212.20
  6. Step 6: Final answer
    x = 77,562.55

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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.