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Finding the Fourth Proportional to 145,407.21, 218,110.83 and 45,567.39

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Solution

The fourth proportional to 145,407.21, 218,110.83 and 45,567.39 is: 68,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,407.21 : 218,110.83 = 45,567.39 : x
  2. Step 2: Convert to fraction form
    145,407.21/218,110.83 = 45,567.39/x
  3. Step 3: Cross multiply
    145,407.21x = 218,110.83 × 45,567.39
  4. Step 4: Simplify right side
    145,407.21x = 9,938,741,253.83
  5. Step 5: Solve for x
    x = 9,938,741,253.83/145,407.21
  6. Step 6: Final answer
    x = 68,351.09

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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.