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Finding the Fourth Proportional to 145,850.25, 218,775.39 and 47,354.25

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Solution

The fourth proportional to 145,850.25, 218,775.39 and 47,354.25 is: 71,031.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,850.25 : 218,775.39 = 47,354.25 : x
  2. Step 2: Convert to fraction form
    145,850.25/218,775.39 = 47,354.25/x
  3. Step 3: Cross multiply
    145,850.25x = 218,775.39 × 47,354.25
  4. Step 4: Simplify right side
    145,850.25x = 10,359,944,511.91
  5. Step 5: Solve for x
    x = 10,359,944,511.91/145,850.25
  6. Step 6: Final answer
    x = 71,031.38

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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.