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Finding the Fourth Proportional to 145,751.52, 218,648.88 and 45,920.64

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Solution

The fourth proportional to 145,751.52, 218,648.88 and 45,920.64 is: 68,887.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,751.52 : 218,648.88 = 45,920.64 : x
  2. Step 2: Convert to fraction form
    145,751.52/218,648.88 = 45,920.64/x
  3. Step 3: Cross multiply
    145,751.52x = 218,648.88 × 45,920.64
  4. Step 4: Simplify right side
    145,751.52x = 10,040,496,504.88
  5. Step 5: Solve for x
    x = 10,040,496,504.88/145,751.52
  6. Step 6: Final answer
    x = 68,887.77

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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.