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Finding the Fourth Proportional to 145,963.62, 218,920.32 and 40,757.58

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Solution

The fourth proportional to 145,963.62, 218,920.32 and 40,757.58 is: 61,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,963.62 : 218,920.32 = 40,757.58 : x
  2. Step 2: Convert to fraction form
    145,963.62/218,920.32 = 40,757.58/x
  3. Step 3: Cross multiply
    145,963.62x = 218,920.32 × 40,757.58
  4. Step 4: Simplify right side
    145,963.62x = 8,922,662,456.03
  5. Step 5: Solve for x
    x = 8,922,662,456.03/145,963.62
  6. Step 6: Final answer
    x = 61,129.36

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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.